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Atomic Pro User's Manual

1. Mixing desk 125 Section 4 Appendices rcam documentation Configuration example of AtoMIC Pro for the MIDI mixing desk Since the mixing desk must control the MIDI volume controllers first set the type of MIDI message Msg field in the main configuration menu to the value C Chg control change Since we want to control the volume which is controller number 7 the Va1 field must be set to this same value These settings must be changed for each analog input which is connected to a potentiometer The following example shows the configuration of analog inputs 1 to 16 lt 1 Stat ON Var Val 7 Out xxx0 Message of the MIDI channel n Volume control number analog input n Controller Physical MIDI output n 1 Arbitrary decision Each potentiometer can control any MIDI channel change type n 7 Furthermore these potentiometers can be used to control any controller number and also the pressure for a particular channel polyphonic pressure pitch change etc A second set of potentiometers wired onto the second connector of the analog inputs could be used to control the panpots of the 16 MIDI channels controller number 10 as well as the volume In this case the linear potentiometers can b
2. R1 00000000 Y Di sceucses O REM e lt AtoMIC Ready gt 7 7 15 9 Patch 01 My Patch File MIDI Prefs Dump Out Spy R2 Pin n Function D2 AY 1 8 LEDs DI to D8 H 9 13 Ground 77 n 14 15 5V Dec Inc O Q R3 Shielded cable with 8 a pS ay wires ground O4 YO au Valid Lj L 1 q O O ugy F4 B i 5 M1 Ur 32 channels Analog to MIDI Converter D5 Fy R5 shielding 15 pin male sub D Ui p z one 15 pin female Sub D connector for the D6 x ne D1 D8 coloured LEDs digital outputs Jl R1 R8 1kQ resistors D7 zw R7 LED IT 8 Plane D8 xy R Shortest connection TT PA xh 14 Light Emitting Diode 116 Section 4 Appendices rcam documentation NOTE It is not necessary to have Max to implement running lights Any MIDI device may be used which is capable of generating MIDI System Exclusive messages compatible with the AtoMIC Pro protocol Instructions Connect AtoMIC Pro up to the circuit shown previously wire the 15 pin male Sub D connector to the 15 pin female Sub D 15 connector for the digital outputs Connect the MIDI IN input of AtoMIC Pro up to the MIDI OUT output of the MIDI interface of the Macintosh on which Max is running Power up AtoMIC Pro The LEDs should light up briefly while the device starts up Load the AtoMIC Chenillard 1 pat Max p
3. 5V 5V 5V t t t Faders logarithmic Max linear potentiometers 22kQ to 50kQ H Y Un 5V Electrical cursor 0 17 IUT IUT Fader 1 Fader 2 Fader 16 Electrical cursor of the potentiometer Analog Analog Analog input n 1 input n 2 input n 16 The MIDI messages produced by AtoMIC Pro can then be mixed with the MIDI messages coming from one or more MIDI instruments keyboard wind instrument controller etc set to different MIDI channels All these messages can then be sent to a MIDI sound generator This mixing desk thus enables the user to control the level of each MIDI instrument 1 Using a merge box 124 Section 4 Appendices rcam documentation MIDI configuration example for the mixing desk Qo Oo JL me r MIDI sound generator Expander MIDI mixer Merge Box MIDI instrument n 1 MIDI channel 8 AtoM C Pro MIDI instrument n 2 MIDI channel 3 MIDI instrument n 3 lt AtoMIC Ready gt MIDI channel 12 Patch 01 My Patch File MIDI Prefs Dump Out Spy Dec nc Q OO OX v O Valid E s O Q 32 channels Analog to MIDI Converter
4. MIDI message Message number coded Notation on the liquid over 4 bits crystal display No message 0 0 0 0 0 No Msg Control number 0 0 0 1 1 C Chg change Pitch change 0 0 1 0 2 P Bend Polyphonic pressure 0 0 1 1 3 Af Tchl Channel pressure 0 0 0 4 Af Tch2 7 bit exclusive 0 0 1 5 SysEx10 message 85 Ke J Ch field Section 4 Appendices digital_MIDI_ch b7 b6 b5 b4 b3 b2 bl bO Bits 7 4 Bits 3 0 ream documentation Physical outputs Out field MIDI Channel MIDI Ch field 7th bit 6th bit 5th bit 4th bit Selected output s 0 0 0 0 XXXXX 0 0 0 1 XXXO 0 0 1 0 XXOX 0 0 1 1 xxOO 0 1 0 0 XOxx 0 1 0 1 xOxO 0 1 1 0 xOOx 0 1 1 1 xOOO 1 0 0 0 OXXX 1 0 0 1 OxxO 1 0 1 0 OxOx 1 0 1 1 OxOO 1 1 0 0 OOxx 1 1 0 1 OOxO 1 1 1 0 OOOx 1 1 1 1 OOOO 86 Section 4 Appendices rcam documentation Val field digital msg value Bits 7 0 b7 b6 b5 b4 b3 b2 b1 b0 Bits 6 0 fixed parameter of the MIDI message note number controller or program number 0 127 Sending a dump with AtoMIC Pro Sending a dump message enables the user to export the current configuration patch The dump data is sent to all MIDI outputs of AtoMIC Pro From the welcome menu go to th
5. Transmitted Recognised Remarks Function Basic Default 1 16 x memorised Channel Changed SG X Mode Default Mode 3 Xx Messages X X Altered X X Note 0 127 X memorised Number True voice x O x Velocity NOTE ON 1 127 X NOTE OFF 64 X After Key s O Xx Touch Channel s O X Pitch Bender Oo x 10 bit resolution Control change lt DeLay X memorised Program Change Fe dedu x Program number 1 128 System Exclusive O O System song Pos X X Common Song Sel X Xx Tune X x System Clocks x Real Time Commands x X AUX Local ON OFF X X Messages All Notes OFF X X Active sense X x Reset x x Mode 1 OMNI ON POLY Mode 2 ONMI ON MONO O Yes Mode 3 OMNI OFF POLY Mode 4 OMNI OFF MONO x No 74 Design specification AtoMIC Pro Analog to MIDI converter Analog Digital Conversion 10 bits by successive approximation Conversion latency for 32 active inputs 110 us per active input Analog inputs Number of inputs 32 Impedance 1 MQ Input voltage 0 5 V Minimum level 1 5 V Maximum level 5 V Digital inputs Number of inputs 8 Compatibility TTL and CMOS e Pull up impedance for 5V 4 7 KQ Digital outputs Number of outputs 8 Compatibility TTL and CMOS Output current 10 mA Display Liquid crystal display 4 lines of 20 characters Yellow green backlite User interface 4 arrow keysfor scrolling through menus blue
6. b7 b6 b5 b4 b3 b2 bi bo Table field 3rd bit 2nd bit Lookup Table 0 0 Linear 0 1 Logarithmic 0 Exponential I Custom Bits 1 0 b7 b6 b5 b4 b3 b2 b1 bO 2 Most Significant Bits MSBs of the window offset value Config4b 8 Least Significant Bits LSBs of the window offset value Param Multil Bit7 0 Prml b6 b0 multipurpose parameter fixed controller or velocity value 0 127 b7 b6 b5 b4 b3 b2 bl bO Param Multi2 Basted 0 Prm2 b6 b0 parameter value 0 127 b7 b6 b5 b4 b3 b2 bl bO 83 Param Multi3 Section 4 Appendices b7 b6 b5 b4 b3 b2 bl 84 Brey 0 Prm3 b6 b0 parameter value 0 127 ream documentation Section 4 Appendices rcam documentation Digital inputs Summary of the digital input parameters Active or inactive digital inputs Digital inputs field Type of MIDI message to be sent Msg field First parameter of the MIDI message Va1 field MIDI channel of the message MIDI Ch field Physical output of the MIDI message Out field Layout in memory of the configuration data for the digital inputs Digital inputs Out and Msgfields digital setup Bit 7 digital inputs ON OFF Status field Bits 6 4 0 Bits 3 0 MIDI message Msg field b7 b6 b5 b4 b3 b2 bl bO
7. 34 Analog input status Stat field 2 ce ccc e 35 Direction of signal variation Var field 2 35 Choice of MIDI message Msg field 36 List of MIDI messages generated by AtoMIC Pro 39 Setting the fixed parameter of a MIDI message Val field 45 Setting the MIDI note number lee e e es 45 Setting the MIDI controller number 45 Setting the MIDI program number 44 4 44 45 Setting the MIDI channel number MIDI Ch field 45 Selecting a MIDI output Out field 2 46 Second menu for configuring the analog inputs menu 2 47 Setting the digital input number Aux field 47 Selecting an alternative value Alt field 47 Multipurpose parameter n 1 Prm1 field 2 49 Setting the velocity of note on with trigger threshold messages 49 Setting the controller value of controller value change with trigger threshold messages
8. 67 Before plugging the device into MIDI peripherals 67 Compatibility 2 222 222 20 0 0 0946 p See bbe eed eR ELSE RI ER APERUIT UE E Ae 67 Connecting to sound production equipment 67 Basic configurati n o eee ette eek te ede e Te a tele ke te e Ya A ra 68 Multiple MIDI connections 69 Connecting to a computer oer ver Ps ous Veste xS e Pvp esq bMS 69 NHDISSBY RS RE PU p whee Sos eerste ahha MR UN Nu etum 70 Section 4 Appendices 1 onset eere RE e RII Rh a Rh p e ia 73 Appendices Content 52 vota acere x vede owe ta RU eR Rc RR d o CARO SR o en ew 73 MIDI IMPLEMENTATION CHART 74 Design sp cification ors vue v vut uam as as OE A RS Und E SOLOS e SOEUR S 75 Dump using MIDI System Exclusive messages 76 Description of the layout of an AtoMIC Pro configuration patch 79 Analoganputs 2 a rae EE Dee EMO ned teed ERR Our DER eee HER 79 Digitalinp ts PET 85 Sending a dump with AtoMIC Pro 87 Receiving a dump with AtoMIC Pro 88 Exchanging dump messages 2e Eipe ete at nd E ERO C etre e etii 88 Dynamic control of the AtoMIC Pro interface using MIDI System Exclusive messages
9. To simultaneously see all the active signals entering the device move the flashing cursor to the left to another display screen 29 Section 1 Introduction rcam documentation lt Display all gt 0000 0000 0000 0000 0000 0000 0000 0000 Each little square represents a vertical mini VU meter with seven segments see figure below In spite of the low resolution of such a VU meter this screen enables the user to see the variations in all the active signals simultaneously inputs 1 to 16 and 17 to 32 Display all gt O 0000 0000 NOTE Due to the screen refresh rate displaying all the signals simultaneously degrades the data acquisition performance of AtoMIC Pro It is recommended that you exit these display modes during normal operation of the device 30 Section 1 Introduction rcam documentation Controlling the backlite of the liquid crystal display The Liquid Crystal Display uses a backlite This enables the user to see what is displayed when the device is used in poor lighting conditions A toggle switch situated on the left side of the box switches the backlite on and off C 4 Toggle switch used to light the liquid crystal display 3l 32 Section 1 Introduction ream documentation Section 2 Interface configuration guide rcam documentation This section explains how to modify the configuration
10. Operational amplifier references FET Opamps for general use TL081 single amplifier with ajustable offset TL081 TL081A TLO81B D JG P OR PW PACKAGE TOP VIEW OFFSET N1 8 NC IN 7 j Vcc IN 6 OUT Vcc 5 OFFSET N2 TL082 double amplifier TLO82 TL082A TL082B D JG P OR PW PACKAGE TOP VIEW 1OUT 1IN 1IN Vcc TL084 quadruple amplifier TLO84 TLO84A TLO84B D J N PW OR W PACKAGE TOP VIEW NC No internal connection 113 Section 4 Appendices rcam documentation LM324 single supply voltage LM 324 OUTPUT 4 INPUT4 INPUT 4 GND INPUT 3 INPUT 3 OUTPUT 3 OUTPUT INPUT1 INPUT 1 V INPUT2 INPUT2 OUTPUT 2 LM358 single supply voltage 1 Output 1 5 Non inverting input 2 2 Inverting input 1 6 Inverting input 2 3 Non inverting input 1 7 Ouput 2 4 Vcc 8 Vcc 114 Section 4 Appendices Design examples rcam documentation MIDI Measuring Shocks Rotation Pressure Temperature 115 Section 4 Appendices rcam documentation Running lights controlled by MIDI Running lights are made of a series of LEDs which switch on and off in turn The aim here is to control 8 coloured LEDs with MIDI using Max patches Wiring diagram 8 1 AtoMIC Pro
11. 49 Multipurpose parameters n 2 and 3 Prm2 and Prm3 fields 50 Setting the NOTE ON and NOTE OFF trigger thresholds 50 Setting the threshold for controller value change messages 50 Setting the program change threshold 50 Third menu for configuring the analog inputs menu 3 51 Setting the filtering algorithm Filter field 51 Setting the number of filtering cycles Nb Cycles field 51 Setting the noise gate threshold Noise gate field 52 Fourth menu for configuring the analog inputs menu 4 53 Setting the data resolution Res field 2 53 Setting the lookup table Table field 2 54 Setting the window size and offset Window and Offset fields 54 Fifth menu for configuring the digital inputs menu 5 56 Digital input status Digital inputsfield lessen 56 Choosing the MIDI message to be associated with the digital inputs Msg field 57 MIDI message parameters for the digital inputs Val
12. nals can easily reach values above 5 volts absolute value AtoMIC Pro can only take voltages which are positive and smaller than or equal to 5 volts Any negative voltage or any voltage above 5V can damage the device 13 For a maximum current of 80 mA Refer to section 1 Introduction for more details on exporting the supply volt ages 110 Section 4 Appendices rcam documentation NE Z D1 e p To AtoMIC G R1 Pro Z D2 Vs D1 D2 silicon diodes 1N4148 RI 1kQ This circuit uses two diodes which conduct when the output signal from the operational amplifier reaches 5 7 volts or 0 7 volts approximately The level of the analog signal on the inputs of AtoMIC Pro cannot therefore exceed greatly the maximum and minimum levels specified 5 and 0 volts You are advised to integrate this protection at each stage of signal conditioning which is connected before AtoMIC Pro Design examples for amplifying analog voltages Inverting amplifier RI Re Ve TT IT TT RI 111 Section 4 Appendices rcam documentation Non inverting amplifier R2 RI Vs y S yy ur 77 Hi id Non inverting amplifier with unity gain buffer impedance adapter N CN 112 Section 4 Appendices rcam documentation
13. ream documentation Liquid crystal display Buttons for incrementing and decrementing parameters Validation button Analog inputs Back view About AtoMIC Pro rcam documentation Power supply MIDI outputs 1 to 4 socket MIDI Cut 7 Iw 15 About AtoMIC Pro rcam documentation Left view O Backlite Og Onott Logic In Logic Out S0 00000000 00000000 CR ojo V Digital Digital 7 TTL TTL Backlite control for the liquid inputs outputs crystal display Right view Light up when Lights up on transmitting MIDI power on MIDI IN E Analog In 17 32 fala a ia dial i Qj Datain Data Out ON oe E O 9 1 4 123 4 ji MIDI input 7 Lights up on Analog impuls MIDI receive 16 About AtoMIC Pro Internal architecture of AtoMIC Pro Analog inputs Multiplexer Non volatile memory 10 bit A D converter Parameters 7 bit conversion 10 bit SysEx message MIDI message Selection of the MIDI output rcam documentation MIDI input MIDI outputs 1 to 4 The multiplexer sequentially connects the different analog inputs to the 10 bit Analog to Digital Converter The digital value obtained is converted into a 7 bit value to
14. Before connecting AtoMIC Pro to any MIDI peripheral make sure you have read the following information Compatibility Before connecting the device to one or more MIDI peripherals make sure they are all compatible with AtoMIC Pro Have a look at the MIDI compatibility chart for the device which is drawn up in section 4 Appendices Also make sure that the MIDI connection cables are standard cables Using non standard or faulty cables may damage AtoMIC Pro as well as the MIDI peripherals connected to it Connecting to sound production equipment During this operation you are advised to turn AtoMIC Pro off as well as the devices you want to plug into it When using the device if it is plugged into any sound producing equipment it is advised that you keep the volume down at a reasonable level Poor manipulation of AtoMIC Pro along with hazardous handling of the sensors or the measuring equipment may lead to dangerous sound levels for people nearby as well as for the equipment itself especially the loudspeakers 67 Section 3 Connections using MIDI ream Basic configuration The simplest configuration is made up of a group of sensors or other measuring devices and a sound production system MIDI expander for example MIDI cable MIDI MIDI
15. MIDI Chand Out fields 57 Saving loading and copying configuration patches 58 Saving loading a configuration patch 58 Copying a configuration patch 59 Changing the name of a patch the contrast of the Liquid Crystal Display and the reference voltage of the Analog to Digital Converter 60 Table of Contents rcam documentation Changing the name of a patch Rename field 61 Contrast of the Liquid Crystal Display LCD Ct rst field 61 Changing the reference voltage of the analog to digital converter ADC Vref field 61 Conversion table 4 me c Eee me SR ee AUR os RR P HAERES I a a e a Se A ER 64 Changing the MIDI preferences of the unit 65 Setting the identification number of the unit ID field 65 Setting the receive MIDI channel MIDI Chfield 65 Setting the MIDI controller numbers Ct r11 and Ctr12 fields 66 Setting the program number Program Nb field 66 Section 3 Connections using MIDI
16. Section 2 Interface configuration guide rcam documentation Changing the name of a patch the contrast of the Liquid Crystal Display and the reference voltage of the Analog to Digital Converter From the welcome screen move the cursor onto the Prefs field and press on the Valid key AtoMIC Ready gt Patch 01 NomPatch Load Save Prefs Dump in Dump out Valid lt Tools gt Rename 01 NomPatch Ctrst 8 ADC Vref 127 60 Section 2 Interface configuration guide rcam documentation Changing the name of a patch Rename field Move the cursor onto the Rename field using the arrow keys This field is made up of eight sub fields each one corresponds to an alphanumerical character and together they form the name of the patch Write the name of the configuration patch by choosing the characters you want using the parameter increment and decrement keys lt Prefs gt Rename 01 TestT Ctrst 08 ADC Vref 127 4 x Inc lt Prefs gt Rename 01 Test5 Ctrst 08 ADC Vref 127 It is not necessary to save the modifications made to the name of the patch saving in this case is automatic Contrast of the Liquid Crystal Display LCD ctrst field Ctrst 1 16 Move the cursor onto the Ct rst field and change the value of the field to suit the setting you want The value 1 corresponds to minimum contrast and 16 to maximum contrast
17. 128 256 512 and 1024 Nevertheless this allows enough flexibility in most cases since the offset can be set with accuracy 55 Section 2 Interface configuration guide rcam documentation Fifth menu for configuring the digital inputs menu 5 To get to this configuration menu from the fourth configuration menu for the analog inputs move the flashing cursor towards the right arrow lt 5 Digital gt Digital inputs OFF Msg No Msg Val 7 MIDI Ch 1 Out xxxO Digital input status Digital inputs field Digital inputs ON OFF The Digital inputs field is used to tell AtoMIC Pro if the digital inputs should be interpreted or not If the field is set to OFF variations in the state of the digital inputs are not taken into account even if one or more of them have been assigned to control the analog inputs If the field is set to ON the digital inputs are taken into account lt 5 Digital gt Digital inputs ON Msg No Msg Val 7 MIDI Ch 1 Out xxxO 56 Section 2 Interface configuration guide rcam documentation Choosing the MIDI message to be associated with the digital inputs Msg field No Msg C Chg P Bend Af Tchl Af Tch2 SysEx7 SysEx8 This field determines which MIDI message is associated with each digital input when these are used in one byte blocks If this field is set to No Msg no MIDI message can be generated even
18. OFF message is generated Actual NOTE OFF threshold Polyphonic pressure t NOTE OFF This type of message may be used to simulate the behaviour of MIDI keyboards which are sensitive to velocity and aftertouch 41 Section 2 Interface configuration guide NOTE ream documentation Envelope detection needs a particularly stable envelope which is free from ripples If ripples do occur they could be interpreted as envelope peaks and this could lead to invalid detection AtoMIC Pro is however protected against possible ripples by an algorithm It is possible to specify the tolerance of the algorithm to the ripples in order to obtain envelope peak detection which is robust in all cases This tolerance to ripples is specified by a parameter field of the secondary configuration menu for the analog inputs see Multipurpose parameters n 2 and 3 Prm2 and Prm3 fields on page 50 NOTE ON message Faa erated ep Envelope Relative NOTE OFF threshold NOTE OFF message is Actual generated NOTE OFF threshold Actual envelope peak Low ripple tolerance NOTE ON message is generated The maximum detected value is not valid High ripple tolerance Actual envelope peak NOTE ON message is generated The maximum detected value is correct 42 The ripple tolerance of the envelope is relative to a maximum detected level If the signal is beneath this peak value b
19. SysEx est envoy AtoMIC Pro par la liaison MIDI Le patcher logicout re oit un nombre CN cod sur 8 bits repr sentant l tat d sir des sorties logiques Le nombre N est calcul de la mani re suivante The logicout patcher allows you to set or clear the logic outputs of AtoMIC Pro 0 5V This is completed by a SysEx message sent to AtoMIC Pro through MIDI The logicout patcher receives a 8 bits coded number N representing the states of the logic output The N number is calculated as below N 2 121 2 2 Z 4 4 8 5 16 6 22 7 64 8 128 o a repr sente l tat d sir de la sortie a O ou 1 where a is the output state 0 or 1 l re sortie logique activ e S me sortie logique activ e 1 Tout teindre 1st ouput set Sth ouput set All Off 2 me sortie logique activ e 6 me sortie logique activ e 2nd ouput set 6th ouput set Z me sortie logique activ e T me sortie logique activ e 3rd ouput set 7th ouput set 2 4 me sortie logique activ e S me sortie logique activ e 4th ouput set 8th ouput set n bo ID 1 16 Sortie MIDI vers Voir aussi logicout2 help AtoMIC Pro AtoMIC Pro See also logicout3 help Choose MIDI output for AtoMIC Pro lelejle Simulation The status of the eight outputs is given directly to the logicout patcher in the form of a decimal number coded over eight bits A bit which can take the values 0 or 1 is associated with each outp
20. a save operation use Inc and Dec keys to change the desired operation The second field selects the number of the patch you want to load save 15 available setups in the non volatile memory To start the load save operation move the cursor on the third line on the Ok field then press the Valid key 58 Section 2 Interface configuration guide ream The load operation is immediate while the saving operation takes approximately 3 or 4 seconds When saving a new screen is displayed showing the status of the saving process When the saving process is finished the interface automatically goes back to the welcome screen Saving Patch 41 Done AtoMIC Ready gt Patch 01 Patchl File MIDI Prefs Dump out Spy You can cancel the saving operation as long as you haven t validated the Yes field with the Valid key To cancel the saving operation valid the No field or move the cursor with the arrows to the first line of the liquid crystal display These two operations are equivalent and enable the user to go back to the welcome Screen Save Patch gt Save 01 Patchl Sure Yes No Copying a configuration patch To copy a patch into another space in memory first load the patch to be copied see further up Save this patch making sure you choose the right destination patch number for the copy and that you are not overwriting a patch you would like to keep 59
21. are for and how to set them It is made up of four sections Section 1 Introduction This section details the basic operations which are available on the analog to MIDI interface Section 2 Interface configuration guide This section details what each parameter in the different configuration menus does Section 3 Connections using MIDI This section details how to connect the interface to other MIDI devices Section 4 Appendices MIDI compatibility chart Design specifications of the device Dump using System Exclusive messages Max objects Installation Configuration patch Dynamic control objects n case of problems Replacing the fuse and the mains adapter Restoring the factory settings Powering with batteries Amplifying analog voltages Design examples Running lights controlled by MIDI Using a Force Sensing Resistor FSR MIDI mixing desk Using piezoelectric sensors List of MIDI controllers Index of terms used 13 About AtoMIC Pro User interface and connectors Top view Backlite control of the liquid crystal display Digital inputs Digital outputs 14 AtoMIC Pro AtoMIC Ready gt Patch 01 My Patch File MIDI Prefs Dump Out Spy o OG Q4 ww 49 Valid 5 O 32 channels Analog to MIDI Converter Buttons for scrolling through the menus
22. conform to the MIDI standard The user may however keep the 10 bit original resolution by converting the digital value into an exclusive MIDI message System Exclusive through a pitch bend message or through a combination of two Control Change messages Certain control parameters allow the configuration of different MIDI messages which export the digital value to the world of MIDI The message is then routed to a selection of MIDI outputs among the four ports available A host system may communicate with AtoMIC Pro via the MIDI input to configure the device before use and to make certain parameters change dynamically with time 17 18 About AtoMIC Pro ream documentation Section 1 Introduction ream Powering up Section 1 Take AtoMIC Pro and its mains adapter Connect the output of the mains adapter to the Introduction device then plug the adapter into a domestic mains socket 220V 12V Adapter Mains 220V f m AtoMIC Pro lt AtoMIC Ready gt Patch 01 My Patch File MIDI Prefs Dump Out Spy 32 channels Analog to MIDI Converter 19 Section 1 Introduction rcam documentation Welcome screen Scrolling through the menus When the device is powered up it initialises itself and then displays the following information d AtoMIC Ready Patch 01 My Patch File
23. digital outputs control does not work Are the control messages reaching the MIDI IN input of the device Check the MIDI connection between AtoMIC Pro and the device which should be sending the control messages for the digital outputs Do the control messages comply with the MIDI System Exclusive protocol of AtoMIC Pro Check the source of the System Exclusive messages Are the digital outputs correctly connected to the device s to be controlled Check the wiring of the digital outputs Are the devices connected to the digital outputs consuming too much current Check how much current is being drawn by the devices connected to the digital outputs The generation of dump messages does not work Is the device receiving the dump function correctly Check the MIDI connections Try different MIDI cables The reception of dump messages does not work Does the device sending the dump function correctly Does the device sending the dump conform to the MIDI System Exclusive protocol of AtoMIC Pro Is the device sending the dump connected to the MIDI IN input of AtoMIC Pro Is the AtoMIC Pro ID number correctly set in e Check the MIDI preferences in the main menu Check the System Exclusive compatibility Check the MIDI connections Try different MIDI cables 104 Section 4 Appendices rcam documentation Replacing the fuse and the mains adapter gt WARNING Make sure the mains adapter isn t plugged
24. does come on 103 The digital outputs control does not work 104 The generation of dump messages does not work 104 The reception of dump messages does not work 104 Replacing the fuse and the mains adapter 105 Replacing the fuse See eco eb dee aged eee er seii Gant td asus 105 Replacing the mains adapter 105 Restoring factory settings initialisation 106 Instructions s e pe Ueto tlre ve tese POR E Re eC S RR E Sr SUIS et 106 Factory settings co usted Rx EE hu RXde ee bee ene dun 108 Genetab i senses Ree a eee e dtes e Cette RIS PUR tae Tusco lo pte lok hea d rit uter a NP eR ADI es er ede 108 MIDI preferences 3 232 visos Dr refe Thor being t ett Lea Le ne ga dob a st Vida Dei dde as cote 108 Analogs inputs 4 t0 32 dis ettosandote tereti aite e DRM DR A PCIE RAE ate Ee a Mees ead ar ee deut 108 Digital anputs 214 De ue os teu orto eee tee er ENS OT QUU re pata he reas ste Sle 108 Powering with Batteries oo AEROSUN aaah ieee NA Nd sep i NE 109 Amplifying analog voltages 110 Design examples for amplifying analog voltages 111 Invertng amplifier zie teo
25. eee CE et E i A esr Wo A Rue eade dea ee i eld ee EP tel dece 111 Nonou verting amplifier i 5 ee due i OR pe obe an Efe reU v AAP ANE a antes dette ere Ne 112 Non inverting amplifier with unity gain buffer impedance adapter 112 Operational amplifier references FET Opamps for general use 113 Desion examples aura oc bec deeded a TR Aio e Tego d ego gd AE o dn e 115 Running lights controlled by MIDI 116 Wiring diagram ou Mr ok Saree gus Ae utes xoa bos eo CR LR odd ER o ER EAS Pure s Rt 116 Ind pendent control LED By LED 524588 2 tard rv por men an energie nes Meta cyanea de 120 Using an FSR pressure sensor 121 Marine diagram usada AUR UM dede RS LATE TELE IR A PU e te ated Uh eee Tue 122 Ret rences sv e eL Sik sae eacus LE qnd os eve ue E le Sr veo Rut Rate Nue Ecc e o Ee Rc e Gui Rea 123 MIDI mixing desk 2 10 ode ee I Rees ES I e e ep glee dee jeune be 123 Wiring diagram c ses 2 te ben otre done LE e A este vices e erue Pole So E EH tae po poles 124 MIDI configuration example for the mixing desk 125 Configuration example of AtoMIC Pro for the MIDI mixing desk 126 Using piezoelectric Sensors 4o ex eae ew hak ved PA bia al bee esce 127 Electronic circuit of the envelope
26. extraction system 128 Configuration example of AtoMIC Pro for a piezoelectric sensor 129 Fist of MIDI controllers oec vec vir VET une eR uus Vues PX SAP tes Ave 130 Mh se NERO OCCORRE OEIL Pe te tee 131 About AtoMIC Pro rcam documentation You have just acquired an AtoMIC Pro interface In order to benefit fully from its possibilities you are invited A b O u t to read this user manual carefully Before using this device please start by reading the safety instructions and the comments on the use of the device p 4 and 8 To make sure you fully master this device we recommend you read this manual in its entirety AtoMIC Pro It is also suggested you keep this manual at hand when you use the device Main characteristics Analog inputs This device has 32 analog inputs allowing the conversion of 32 analog signals into MIDI messages Digital inputs This device has 8 digital inputs They enable a device generating digital signals i e 0 or 5V only to be exported into the world of MIDI Digital outputs Eight digital outputs can be controlled by MIDI messages entering the interface Enabling switching to 5V or disabling switching to OV these outputs allows the separate control of eight devices by digital TTL level signals MIDI outputs The device has four MIDI outputs allowing an independent control of four MIDI devices AtoMIC Pro
27. help BROOD RED iin 120 Section 4 Appendices fF Using an FSR pressure sensor An FSR Force Sensitive Resistance sensor measures the mechanical pressure applied to its surface It comes in the form of a sensitive disk of variable size depending in the model The sensor is made of a material whose electrical resistance ohmic resistance goes down when the pressure on the sensor goes up By wiring this sensor into a potential divider form a continuous analogue signal can be obtained which is proportional to the pressure applied to the sensor This signal can be used for example to change the value of a MIDI controller in real time by applying pressure onto the sensor It can also be used to generate MIDI notes when a finger is used to hit the sensor 121 Section 4 Appendices rcam documentation Wiring diagram 13 1 ee 00000000000 AtoMIC Pro 25 14 Pin n Function SU ELE File MIDI Prefs the second i Dump Out Spy Not connected Ground 5V D 2v 12V OX O T Shielding O j g O O4 Oo o m 32 channels Analog to MIDI Converter R1 resistor Possible values 47k to 100k 25 pin male depending on the required sensitivity the Sub D higher the resistance the higher the connector sensitivity
28. if the digital inputs change state The other field values associate a MIDI message with variations in digital input levels as long as these are active the Digital inputs field is set to ON 5 Digital Digital inputs ON Msg C Chg Val 7 MIDI Ch 1 Out xxxO To find out how the MIDI messages in this field work refer to the beginning of this section to the paragraph entitled Choosing a MIDI message Msg field MIDI message parameters for the digital inputs Val MIDI Ch and out fields These parameters are identical to those used for configuring MIDI messages associated to the analog inputs Refer to the beginning of this section to the paragraph entitled Main menu for configuring the analog inputs to find out what these parameters mean 57 Section 2 Interface configuration guide rcam documentation Saving loading and copying configuration patches Saving loading a configuration patch If you wish to load or save the configuration of the interface go to the welcome screen using the arrow keys Move the flashing cursor onto the File field and press on the Valid key to access the File screen AtoMIC Ready gt Patch 01 Patchl File MIDI Prefs Dump out Spy Valid Load Save Patch Save 01 Patchl Ok Cancel Move the cursor on the first line on which two fields can be reached The first field enables to select a load or
29. is an analog to MIDI interface It converts analog voltages to MIDI messages The role of such an interface 1s to convert electrical signals which are representative of a physical phenomenon or dimension mechanical pressure temperature distance between two points into musical information by using the MIDI standard Thus the measurement of a physical dimension can be used to generate music or to act on some sound parameters A single analog signal can generate multiple identical MIDI messages on different MIDI outputs MIDI routing facilities About AtoMIC Pro rcam documentation MIDI input A MIDI input enables the interface to receive MIDI messages from an external system These messages are destined to change certain configuration parameters of the analog channels and to control the digital outputs Liquid Crystal Display LCD and keypad The liquid crystal display and the keypad allow the user to change the configuration of the device by using menus Changing a parameter has an immediate effect on the operation of the device The display also allows the user to check in a graphical way the status of signals entering the device Non volatile memory A non volatile memory in the device allows the user to save 15 configurations Each configuration contains the parameters for the 32 analog inputs and for the digital inputs A name made up of 8 alphanumerical characters can be given to the saved configuration 10 About AtoMIC Pr
30. keys 2 keysfor changing parameters red keys Inc and Dec validation key green key Valid 1 switch on off for the backlite of the liquid crystal display Memory saving 15 configuration setups Indicators Power ON indicator MIDI OUT data indicators 4 MIDI IN data indicator Connectors e 12V DC PSU 2 1 mm Canon connector MIDI IN MIDI OUT 4 Analog inputs 25 pin female SUB D connectors 2 Digital inputs 15 pin female SUB D connector Digital outputs 15 pin female SUB D connector Power supply 12 V DC 800 mA mains adapter Dimensions Weight 165 1 x 225 P x 38 h mm 6 5 W x 8 86 D x 1 5 H 740 grams without the mains adapter Accessories Optional User manual Mains adapter in compliance with European safety norms 220 V AC 12 V DC Patches for the Max MSP program Easy connect breakout box 15 Section 4 Appendices Irem Dump using MIDI System Exclusive messages There are two ways of configuring AtoMIC Pro By using the User interface keypad and liquid crystal display By using System Exclusive messages configuration dump received via the MIDI IN input A MIDI dump is used not only to receive but also to send configuration patches from AtoMIC Pro using a MIDI connection This configuration information is specific to the device and is therefore transmitted using MIDI System Exclusive messages
31. memory of AtoMIC Pro Un BANG d clenche le Num ro du patch chargement du patch charger 1 15 4 BANG triggers the Patch number to load of the patch load 1 15 loadpatch 1 6 Sortie MIDI vers AtoMIC Pro MIDI output selection for AtoMIC Pro AtoMIC Pro Pour des raisons d optimisation l cran cristaux liquides n est pas automatiquement mis jour lors d un chargement de patch d clench par MIDI L cran cristaux liquides sera mis jour lors d un changement de menu effectu depuis le clavier d AtoMIC Pro For optimisation reasons the LCD is not automaticaly updated when a new patch is loaded through MIDI The LCD is updated when you change pages with the keyboard of AtoMIC Pro 99 Section 4 Appendices rcam documentation Controlling the digital outputs The status of the 8 digital outputs of AtoMIC Pro may be controlled by using MIDI System Exclusive messages generated by the patchers called logicout and logicout2 logicout logicout help logicout v 2 11 2000 Entr es nombre cod sur 8 bits 0 255 Sortie message SysEx Argument Entier optionnel ID Contr le les sorties logiques d AtoMIC Pro Inlets 8 bits number 0 255 Drives the digital outputs of AtoMIC Pro Oulet SysEx message Argument Optional int CID Le patcher logicout permet de contr ler l tat des sorties logiques d AtoMIC Pro 0 5V Pour cela un message
32. of AtoMIC Pro as well as the role of each configuration parameter This section also explains the methods for saving and loading different configurations inside or from the non volatile memory in the device Section 2 Interface configuration quide Before modifying the configuration of the device Before trying to configure AtoMIC Pro make sure you have read the following information Memory banks Patches To enable the device to be used in many contexts it is equipped with a non volatile memory capable of saving different parameter configurations All the parameter values are grouped into a patch where the configuration for all 32 analog inputs and the digital inputs is stored Twenty configuration patches can be saved in the device memory A name made up of eight alphanumerical characters can be associated with each patch The configuration in current use is stored in volatile memory RAM Before switching the device off you should if need be save the current configuration The modifications stored in RAM are not automatically saved to non volatile memory When powering up the patch which was last active is loaded automatically Connection to sound producing equipment If the device is plugged into any sound producing equipment when you modify the configuration of the device it is advised that you turn the sound level down Improper manipulation of AtoMIC Pro along with dangerous handling of the sensors or the measuring eq
33. performs an analog to digital conversion of the voltages on the analog inputs The digital value thus obtained is used as a parameter or a trigger of a MIDI event which was chosen beforehand and configured in the internal memory of the interface The event or MIDI message is sent to a compatible device through the MIDI outputs on the back of the device via a compatible cable not supplied It is important to note that the analog to MIDI interface is rarely used on its own Not only does it use the devices that it controls or with which it exchanges information but also if necessary it will work with electronic devices which normalise signal levels In the case of the measurement of physical dimensions the sensors used do not always deliver an output voltage which is sufficient to ensure compatibility with the interface It is therefore necessary to amplify the signals before feeding them into AtoMIC Pro The need for amplification comes from the fact that low level signals are particularly vulnerable to noise This noise is usually generated when the signal travels through a conducting cable If the noise is of a level similar to the maximum amplitude of the signal the latter will be drowned in noise and will remain unusable Amplification of low level signals is therefore done as near to the signal source as possible before the noise can affect it The signal obtained has a low noise level compared to the useful signal level Noise Conn
34. rcam documentation AtoMIC Pro SENSORS wm INTERFACE User s Manual AtoMIC Pro 32 channels Analog to MIDI Converter Ircam zzz Centre Pompidou ream documentation Copyright 1998 2002 IRCAM All rights reserved This manual must not be copied neither in its entirety nor partially without written permission from IRCAM This user manual was written by Emmanuel Fl ty and Bruno Bossis and translated by Emily Morin It was kindly proofread by Marc Battier head of documentation The Analog to MIDI interface AtoMIC Pro was designed and developed by Emmanuel Fl ty Third edition June 2002 Version 2 of the documentation This documentation corresponds to version 2 of the AtoMIC Pro interface version 2 02 of the internal assembler software and version 2 of the Max patches and objects AtoMIC Pro is a trademark of IRCAM Max is a trademark of IRCAM Apple Macintosh is a registered trademark of Apple Computer Inc For further information please contact Paola Palumbo Marketing department IRCAM 1 place Igor Stravinsky 715004 Paris France Tel 33 01 44 78 14 87 Fax 33 01 44 78 43 55 E mail paola palumbo ircam fr IRCAM 1 place Igor Stravinsky 75004 Paris France Tel 33 01 44 78 48 43 Fax 33 01 44 78 15 40 Safety instructions N Warning Notes Befor
35. software called Max to simplify the generation of MIDI System Exclusive messages which are to be used for configuration dumps and for the dynamic control of AtoMIC Pro If you don t own Max the patches can be used with the MAXplay software included on the CD ROM MAXplay can also be downloaded from www cycling74 com website Installation Quit all running programmes Copy the Objets_AtoMIC_Pro folder from the CD ROM into the External folder in Max or into another folder whose pathname is specified in Max If this folder does not exist create it before copying the Objets_AtoMIC_Pro folder into it Copy the AtoMIC_Pro_Help folder from the CD ROM into the Max folder entitled MAX_Help Copy the AtoMIC_Pro_Patches folder from the CD ROM into a folder of your choice Check the OMS configuration as well as the declaration of connected MIDI peripherals 95 Section 4 Appendices COM Check that the Objets AtoMIC Pro folder is included in a folder whose pathname is in the paths which Max searches through If this isn t the case run Max and add a new search pathname see illustrations below File Edit View Object Font Windows Options Trace Extras Aide Startup Folder Help Folder Timeline Action Folder Other Folders Path List 1990 2001 Cycling 74 IRCAM 46491K free 96 Section 4 Appendices rcam documentation Max configuration patch for AtoMIC Pro This patch allows the user to choose co
36. status of the digital outputs One bit set to 1 shows that the corresponding output is active 5V whereas a bit set to 0 corresponds to an inactive output OV b7 b6 b5 b4 b3 b2 bl bO OxFO Beginning of SysEx 0x00 SysEx ID 0x20 0x39 Atomic Pro ID 1 16 Ox7D SysEx function number digital outputs control identifier Byte containing the status of the digital outputs d OxF7 End of SysEx Data to be transferred in two nibbles 92 SysEx10 System Exclusive message Section 4 Appendices rcam documentation The different MIDI messages which can be sent by AtoMIC Pro are detailed in Section 2 Interface configuration guide on page 33 except for SysEx message When the analogue toMIDI conversion uses this message the digital value of the converted analog signal is sent via MIDI in the form of a System Exclusive message OxFO 0x00 0x20 0x39 Beginning of SysEx SysEx ID Atomic Pro ID 1 16 0x78 SysEx function number Analog input 1 32 By By te 1 te 2 OxF7 7 LSBs of the 3 LSBs of the 1 End of SysEx val Gh act val SysEx 10 message transmitted ue Value MSBx128 LSB ue 93 94 Section 4 Appendices ream documentation Section 4 Appendices rcam documentation Max objects and patches Some objects and patches have been developed specially for a piece of
37. to Section 4 Appendices on page 73 for a list of existing MIDI controllers Setting the MIDI program number Using the nc and Dec keys select the programme number you want from the 128 available values 0 to 127 Setting the MIDI channel number mrpr cn field MIDI Ch 1 16 This field enables the user to select a MIDI channel to which the MIDI message will apply 1 to 16 1 Ch 1 gt Stat ON Var Msg C Chg Val 19 MIDI Ch 1 Out xxxO 45 ream documentation Section 2 Interface configuration guide Selecting a MIDI output out field Out 1 4 AtoMIC Pro has 4 independent MIDI outputs situated on the back of the box This field enables the user to select any combination among the 1 to 4 the MIDI output to which the message is to be sent lt 1 Chil gt Stat ON Var Msg C Chg Val 19 MIDI Ch 1 Out xOxO The outputs are represented as they are located on the back of the box 4 to 1 from left to right A cross x indicates that the output is not selected whilst a O shows an active output The four MIDI ouputs gives you 16 possibilities for routing the MIDI message for each analog input Recapitulative example If you want to control the panpot MIDI controller number 10 of two MIDI sound production system configured on channel 2 using MIDI outputs 1 and 3 and a sensor or a measuring device connected to analog input number f
38. 00 101 Logicout2 help 120 Lookup table 91 M Mains adapter 11 13 19 75 103 105 Maintenance procedures 11 MAX 73 95 96 97 102 MA Xplay 95 Memory 10 Memory saving 75 Menu 20 1 34 2 47 3 51 4 53 5 56 Configuration 34 40 42 43 56 Fifth 56 132 Index rcam documentation Fourth 53 Main 34 57 Prefs 122 Second 47 Third 51 MIDI After Touch 74 AUX Messages 74 Basic Channel 74 Channel 86 108 Channel number 45 Compatibility chart 67 Configuration 65 Control change 74 Controller numbers 45 46 66 Controllers 87 130 Implementation chart 73 74 Inputs 10 17 24 76 89 104 117 Messages list 39 Mode 74 Note number 45 74 87 Note on message 40 Output selecting an output 46 Outputs 9 46 69 103 117 Peripherals 67 Pitch Bender 74 Preferences 65 108 Program Change 74 Program number 45 66 87 Receive channel 65 Spy 70 SysEx10 93 System Common 74 System Exclusive 73 74 System Exclusive messages 76 89 System Real Time 74 Velocity 74 MIDI Ch field 21 34 45 46 56 57 65 79 85 86 Most Significant Bits 53 Msg field 36 57 79 85 108 126 Multiplexer 17 N Nb Cycles field 51 79 Nibble 78 No field 107 Noise Gate field 52 79 Noisegate 80 No Msg 85 N ON 40 O Offset 113 Offset field 54 79 OMS 95 Operational amplifiers 110 111 Optional 75 Out field 46 57 79 85 86 103 108 P Param Multil 83 Param Multi2 83 Param
39. 1 75 109 Batteries 13 109 Byte 78 C C Chg 85 Channel pressure 85 Chenillard 1 pat 118 Computer connecting to a computer 69 Conditioning modules 110 129 Configl 80 Config2 81 Config4a 82 Config4b 83 Configuration patch 20 79 Connectors 12 14 15 16 75 131 rcam documentation 15 pin Sub D 24 28 15 pin sub D 25 25 pin Sub D 22 28 MIDI IN 35 Control number change 85 Converter 17 Copying configuration patch 58 Ctrll field 66 108 Ctrl2 field 66 108 Ctrst field 61 Cursor flashing 20 34 D Data out lights 103 Digital inputs 9 25 33 56 57 75 85 97 Digital inputs field 56 57 85 Digital outputs 9 24 75 92 100 104 117 120 Dimensions 75 Display 75 Dump 79 87 88 97 104 106 Dump Out 20 87 Dynamic control 13 24 89 95 102 Dynamic controller 98 Dynamic range 41 E Envelope 26 40 42 43 50 127 128 129 Exchanging 88 Exporting 91 F Factory settings 13 106 107 108 File field 58 Filter 80 Filter field 51 79 Flashing cursor 21 29 107 FSR 13 73 121 122 123 Fuse 13 103 105 I ID 108 ID field 65 Identification number 65 Impedance adapter 112 Inc and Dec keys 21 29 45 Indicators 75 Initialisation 106 K Keypad 10 76 L Least Significant Bits 53 Level maximum level 63 64 Liquid Crystal Display 10 20 60 61 76 103 Loading 33 90 99 Loading configuration patch 58 Logicout patcher 100 101 Logicout2 patcher 1
40. 89 Activating Desablmg an analog input uisu e e EE ESE 3A DREAM EE RS a 89 Loading a patch 2o Ayan dente ene ib REESE EE rS se mer E RENE e p ai tes ALS 90 Saving the currentipatcli e ee pico eiue REM E ea RP EN RE ER eue eg 9 Exportingt the customlookuptable celle RR 9 eh 9 Controliof the digital outputs 21d rm ERES RT ES RAS REUS P mE 92 SysEx10 System Exclusive message 93 Max objects and patches er En TS eA ND BLAN IRAE NE OE RS UN DM er ca 95 Installation tc eesti RUPEE Re SEE EL isa UE E er dM Re d 95 Max configuration patch for AtoMIC Pro 97 Dynamic controller patchers in AtoMIC Pro 98 Activation deactivation of an analog input 98 Loading a configuration patel teaa eh sot dete pasha puse oan db Goby AER que daria peur AI e Gob pa ce ets 99 Table of Contents rcam documentation Controlling the digital outputs cese I9 etes 100 Example of a Max patch for a dynamic control of AtoMIC Pro 102 In case of problems io esse ae nes EQ EEOC E MERC d OR eere S oe s 103 The liquid crystal display does not show anything 103 No MIDI OUT data the data out light does not come on 103 No MIDI OUT data the data out light
41. AtoMIC Pro for a piezoelectric sensor The signal from the envelope extraction circuit can be connected to AtoMIC Pro in order to generate MIDI notes In this case the configuration of AtoMIC Pro is as follows lt 1 sL lt 2 sl gt Stat ON Var Aux OFF Alt 64 Msg N ON M D Val 40 Prml 00 Prm2 20 Ch 10 Out xxxO0 Prm3 127 drum sound undulation MIDI channel n 10 Tolerated Note on message MIDI note n 40 snare threshold residual with dynamic velocity Set to its maximum value to avoid triggering multiple notes The relative NOTE OFF threshold determines during the decreasing phase of the envelope when to switch the current note off and to allow another note to be triggered If the envelope undulates during the decrease in level and the relative NOTE OFF threshold is too low multiple triggering of notes may occur Control this parameter to get the result you want To obtain valid detection of the maximum level of the envelope which will determine the velocity of the MIDI note it is essential that the value of the tolerated residual undulation of the envelope be set P rm2 increase the value of this parameter if the envelope stays very undulatory during its increase in level Refer to section 2 nterface configuration guide to the paragraph entitled Choosing the MIDI message and Multipurpose parameters numbers 2 and 3 for more details on the different aspects of
42. Changing the reference voltage of the analog to digital converter apc vref field ADC Vref 0 127 General remarks The Analog to Digital Converter is one of the main parts of AtoMIC Pro It is the Analog to DigitalConverter which provides a link between the analog world of measuring devices to the digital world of the MIDI standard 61 Section 2 Interface configuration guide rcam documentation Broadly speaking a converter has a measuring scale which relates the digital output value without a unit to the analog signal level in volts This relationship is specified by a reference voltage This reference voltage dictates what the dynamics of the analog signals may be i e their maximum amplitude which must be equal to the reference voltage If the dynamics are smaller than the reference voltage then part of the resolution of the converter is never used in this case the MIDI messages would lack precision and could never reach their maximum value In order to adapt to different signal dynamics the converter used by AtoMIC Pro which has a resolution of 10 bit 1024 digital values possible has an adjustable reference voltage Its setting affects all of the analog inputs since they are multiplexed and there is only one converter Analog Digital value signal 10 bits A Reference Phi DOSE rm 1023 2 5 Volts E 0 t Signal 1 Signal 2 The above example shows two signals chan
43. IN MIDI expander adl OUT mem amplifier CO AtoMIC Pro ESS 90 Stereo Patch Oly Batch audio Error ee output O o T odo mx o H l e amp a 2000 Q D Mixing desk Sensors Ry The mixing desk shown in the above illustration may of course be used to mix audio signals coming from other sound production systems which aren t linked to AtoMIC Pro NOTE For MIDI connections make sure you use standard MIDI cables only 68 Section 3 Connections using MIDI bream Multiple MIDI connections AtoMIC Pro has four independent MIDI outputs This means up to four MIDI devices can be connected to the analog to MIDI interface oo MIDI OO oo 5555 00 device AtoMIC Pro n 4 lt Prot ae gt o o p eee en MIDI Dump Out Spy oo EE 00 device n 3 De Inc qd Q Q OO QUID mu F E MIDI E O oo s355 oo device n 2 A oo 32 channels Analog to MIDI Converter Bes MIDI oo BESS 00 device gt n 1 5 co Sensors Ry Connecting to a computer When AtoMIC Pro is to be used with a computer for sending and receiving MIDI messages you should use a MIDI interface Refer to your computer documentation f
44. MIDI Prefs Dump Out Spy A flashing cursor should appear in the top left hand corner of the screen at the same time as the display shown above This display or menu is the welcome screen of the user interface and indicates that the device was correctly initialised In this document the flashing cursor will be represented by underlining the represented area and putting it in bold font The menus which are displayed on the liquid crystal display LCD are made up of different fields Pressing the arrow keys of the keyboard v moves the flashing cursor towards the next field in the direction corresponding to that of the pressed key The arrows shown in the top left and right hand corners provide access to different configuration menus There are 8 menus or display screens which are connected to each other along a virtual horizontal axis except for the sub menus accessible from the welcome screen File MIDI Prefs Dump Out and Spy You gain access to these menus by positioning the flashing cursor on the menu of your choice and then pressing the Valid key The display of the different menus and screens along the horizontal axis is cyclic Screenl welcome Screen2 Screen 8 On the second line of the welcome screen the number of the current configuration patch appears numbered from 1 to 15 along with its name made up of 8 alphanumerical characters To change the name of the configuration patch refer to Changi
45. Multi3 84 Patch 33 58 59 76 99 Changing the name 60 Configuration 64 PatchName 77 P Bend 85 Physical outputs 86 Piezoelectric sensors 127 Pitch change 85 Polyphonic pressure 85 Power connector 106 Power ON light 103 105 Power plug 109 Power supply 28 75 107 Powering 109 Preferences 20 Prefs field 60 Prm1 field 49 79 Prm2 field 50 79 Prm3 field 50 79 Problems 103 Program Nb field 66 108 133 Index rcam documentation R RAM 33 Receiving 88 Reference level 64 Reference voltage 60 61 62 63 64 103 122 Rename field 61 Res field 53 79 Resolution 79 Running lights 116 117 S Saving 33 91 106 Saving configuration patch 58 Screen LCD 29 Sending 87 Signal levels 23 Sound producing equipment 33 SPEEDLIM 51 Spy 20 70 Stat field 35 79 89 108 SUBSAMP 51 Supply voltage 28 110 SysEx10 85 System Exclusive messages 24 System Exclusive protocol 73 T Table field 54 79 Threshold 40 43 44 49 50 52 103 Tools 60 Top view 14 U User interface 35 75 V Val field 45 57 79 85 87 108 126 Valid key 20 Var field 35 79 108 W Weight 75 134 Index rcam documentation Window field 54 79 Window size 54 55 Y Yes field 107 ream documentation Notes 135 ream documentation Notes 136 ream documentation Notes 137 ream documentation AtoMIC Pro 1998 2002 IRCAM 138
46. OFF Alt 45 Prm1 0 Prm2 0 Prm3 127 The two screens above illustrate the configuration of analog input number 16 screen a and its control by digital input number 2 screen b The MIDI message associated with the analog input is of the note on type N ON and the MIDI note number is set to 40 screen a The alternative value is set to 45 screen b Thus when digital input number 2 is in state 0 zero volt the analog signal generates MIDI note 40 If the digital input is in state 1 five volts the note played is MIDI note 45 Several analog inputs may be controlled by the same digital input The digital control signal may therefore be used to transpose or reconfigure all the notes which are generated by the different sensors or measuring devices 48 Section 2 Interface configuration guide ream Multipurpose parameter n 1 Prm1 field Prml 0 127 This field enables the user to configure the velocity of a note or the controller value for note on with trigger threshold or controller value change with trigger threshold messages lt 2 Ch 16 Aux OFF Alt 45 Prml 64 Prm2 0 Prm3 127 Setting the velocity of note on with trigger threshold messages Set the Prm1 field to the value you want using the increment and decrement keys Inc et Dec Setting the controller value of controller value change with trigger threshold messages Set the Prm1 field to the value you want using the increment and decrement keys In
47. Pro Voir aussi logicout help See also logicout3 help jejeje Simulation The patcher ogicout2 is identical to patcher logicout except that the statuses of the outputs are explicitly given to the patcher output by output 101 Section 4 Appendices rcam documentation Example of a Max patch for a dynamic control of AtoMIC Pro 8 v SS Atom c controle pat E Contr le dynamique d AtoMIC Pro Dynamic control of AtoMIC Pro Activation d sactivation d entr e analogique Toggle On Off the analog inputs z P Chargement de Patch Patch load S lection de l entr e activer d sactiver Number tof the input to toggle ON OFF Etat de l entr e Input status 0 ON n P 1 1 0FF toggleinput toggleinput toggleinput toggleinput Un BANG d clenche le chargement du patch 4 BANG triggers the load of the patch Num ro du patch S lection de la sortie MIDI 4 charger 1 15 AUMICP vers AtoMIC Pro o ro Number of the Choose MIDI output loadpatch ie load for AtoMIC Pro version 2 11 2000 102 Section 4 Appendices vC In case of problems If the AtoMIC Pro interface does not function correctly start by checking the following points If the problem persists please contact IRCAM The liquid crystal display does not show anything Is the mains adapter plugged into the device Is the mains adapter plugged into a main
48. Those two controller numbers can be used to control the eight digital outputs In version 1 of AtoMIC Pro only System Exclusive messages allowed the control of the digital outputs Version 2 allows the control of the outputs via standard MIDI control change message Since MIDI data are only 7 bits long control was splitted into two nibbles in two different messages the 4 least significant bits LSB are controlled by Ct x11 while the 4 most significant bits MSB are controlled by Ct x12 NOTE Since each controller is only driving 4 bits their value should be between 0 and 15 Setting the program number Program Nb field Program Nb 1 128 The AtoMIC Pro device can store up to 15 different setups in its non volatile memory Changing from one setup to another was previously achieved by a System Exclusive message in version 1 This feature is still working but loading a configuration patch can also be performed by sending a standard program change MIDI message to the unit This is particularly useful for controlling the AtoMIC Pro with MIDI foot pedals sending such a message Usethe Program Nb field to associate a program number with the current configuration patch 66 Section 3 Connections using MIDI ream documentation Section 3 This section shows different connections which are possible with AtoMIC Pro and compatible Connections MIDI systems using MIDI Before plugging the device into MIDI peripherals
49. Window Offset courante vers Atomic 42 or be po pzo pizz 4 GO un 102 po Sends current configuration to Atomic Raffraichit l affichage des diff rents param tres Updates parameters displa general MIDI PREFS r sysex_to_atomic SysEx IN SysEx OUT SI IT 97 Section 4 Appendices rcam documentation Dynamic controller patchers in AtoMIC Pro These patchers generate MIDI System Exclusive messages allowing the dynamic control of certain parameters of AtoMIC Pro for more details refer to the paragraph entitled Dynamic control of the AtoMIC Pro interface with System Exclusive messages Do not hesitate to see the help patches for these patchers click on the patcher in edit mode and then press Command H Activation deactivation of an analog input The status of each analog input active or inactive may be modified dynamically using the patcher called toggleinput toggleinput help toggleinput Entr es num ro de l entr e analogique 1 22 tat de l entr e 0 1 Sortie message SysEx Arguments entiers optionnels ID et entr e modifier v 2 11 2000 Inlets analog input number 1 22 input status 0 1 Oulet SysEx message Arguments Optional int ID and input to change Active d sactive une entr e analogique d AtoMIC Pro Drives ON OFF a selected analog input Etat de l entr e Input stati r 2 E id ID 1 16 S lection de
50. a reduction of the messages s bandwidth and ensures a low latency Setting the number of filtering cycles Nb cycles field Nb Cycles 0 127 This field enables the user to select the number of cycles needed for the filtering operation If the number of cycle is zero the filter is not active lt 3 Ch 1 gt Filter SUBSAMP Nb Cycles 10 Noise Gate 8 In the above screen the analog input 1 is scanned every ten scan cycles This parameter is particularly useful when the analog input is connected to a sensor or a measuring device which responds slowly or for which a high sampling rate is not needed Thus fewer MIDI messages are generated which leaves more bandwidth for higher priority analog inputs 51 Section 2 Interface configuration guide rcam documentation Setting the noise gate threshold Noise gate field Noise Gate 0 127 The noise gate threshold specifies the variation of the analog signal that would be detected as a change If the analog signal moves inside the range of the noise gate no MIDI message will be sent Noise band r a wc Sensor signal I Sampled value 1 I cepe ERES Sensor b noise Sampled value MIDI Message m This field enables the user to set the width of the range A large range will be very effective against strong noise but will make the MIDI value less sensitive to a relevant change of the analog signal For a referenc
51. ale Canon The mains adapter must be capable of connector 2 1 mm giving an output current of 800 mA VV s 105 Section 4 Appendices rcam documentation Restoring factory settings initialisation If you would like to restore the default configuration patches of AtoMIC Pro follow the following procedure gt WARNING Restoring the factory settings will cause the loss of the configuration patches saved in the non volatile memory of the device It is advised that you save these patches onto a sequencer or a MIDI recording device refer to the paragraphs entitled Sending Receiving dump messages as well as Max objects and patches Instructions 1 Unplug the power connector from the device and wait until it is completely turned off 2 Plug the power connector back in and keep the Inc and Dec keys pressed After the start up screen has been displayed the restore screen for the factory settings comes up AtoMIC Pro lt AtoMIC Ready gt Patch 01 My Patch File MIDI Prefs Dump Out Spy OX KO Valid P O KO O4 32 channels Analog to MIDI Converter 106 Section 4 Appendices a am K7 AtoMIC Ready gt TPetch 01 My Patch File MIDI Prefs Dump Out Spy Reset to Factory Settings Yes No You may cancel the operation of restoring the factory settings by validating the No
52. allows an analog signal to generate a channel pressure type MIDI message channel aftertouch This pressure message affects a whole MIDI channel regardless of what note is played The channel number to which the pressure information is applied is selected by the user see Setting the MIDI channel number MIDI Ch field on page 45 10 bit exclusive message SysEx10 This message allows the transmission of the result of the analog digital conversion The digital value is transmitted over 10 bits in a MIDI System Exclusive message Refer to SysEx10 System Exclusive message on page 93 to learn about the structure of this message 44 Section 2 Interface configuration guide rcam documentation Setting the fixed parameter of a MIDI message va1 field Val 0 127 This field enables the user to set the fixed parameter of a MIDI message associated with an analog input This parameter value may correspond to a MIDI note number a MIDI controller number or a MIDI program number depending on the type of MIDI message which is chosen 1 Chet gt Stat ON Var Msg C Chg Vale 19 MIDI Ch 1 Out XxxO Setting the MIDI note number Using the nc and Dec keys select the MIDI note number you want from the 128 available values 0 to 127 Setting the MIDI controller number Using the nc and Dec keys select the MIDI controller number you want from the 128 available values 0 to 127 Refer
53. an internal diameter of 2 1 mm oo y N 2 1mm Ec NOTE Given the extra current consumption of the backlite for the liquid crystal display you are advised not to use the backlite when using the device on batteries in order to prolong their charge 12 AAA R3 AA R6 C R14 or D R20 depending on the required charge 109 Section 4 Appendices rcam documentation Amplifying analog voltages This paragraph shows only a few design examples for preconditioning analog signals in order to obtain signals with a high enough level Amplification of the analog signals often uses electronic components called operational amplifiers Very cheap and available in the form of integrated circuits they have the advantage of being able to multiply analog signals by a factor of 100 000 and sometimes more Of course a signal on the output of an operational amplify can not exceed the supply voltage Non inverting input Inverting input Operational amplifier supply rail 12V OpAmp Ground 0V Operational amplifiers usually work with symmetrical power rails 12 volts for example AtoMIC Pro exports these supply voltages onto the analog input connectors which greatly facilitates the use of conditioning modules external to AtoMIC Pro WARNING Operational amplifiers are often powered using high positive AND negative voltages The amplified sig
54. atch Note Chenillard French means running lights Select the MIDI output connected to AtoMIC Pro from the outputs available in OMS If you are not using OMS edit the patch delete the objects relative to OMS and indicate the name of the MIDI port in the midiout object in general the MIDI ports are called a or b 117 Section 4 Appendices rcam documentation Activate the metronome the LEDs in your circuit as well as the simulation LEDs i e in the Max patch should light up in sequence AtoMIC chenillard 1 pat The AtoMIC Chenillard 1 pat patch is a running light command in the form of a binary Chenillard pour AtoMIC Pro 1 3 counter The decimal number coming from the LEDs scrolling for AtoMIC Pro 1 3 counter object is sent directly to AtoMIC Pro es c iei using the ogicout object The conversion of the decimal number into binary is done inside AtoMIC Pro and this is then sent to the 8 LEDs Compteur BINAIRE Binary counter Two other Max patches can be used to implement different running lights s EINE AtoMIC Chenillard 2 pat Johnson PS f counter The eight LEDs light up one after the inary counter E A sequence from O other only one LED ever being lit at any given to 255 g time Objet de contr le des AtoMIC Chenillard 3 pat in this patch the sorties logique d AtoMIC g i Logic outputs lighting sequence of 256 iterations can be ee edited This is done by graphically editin
55. c et Dec 49 Section 2 Interface configuration guide rcam documentation Multipurpose parameters n 2 and 3 Prm2 and Prm3 fields Prm2 Prm3 0 127 This field enables the user to configure the trigger thresholds of note on controller value change with trigger threshold and program change with trigger threshold messages 2 Ch 16 gt Aux OFF Alt 45 Prm1 64 Prm2 40 Prm3 127 Setting the NOTE ON and NOTE OFF trigger thresholds The P rm2 field configures the threshold above which a NOTE ON message is generated while the P rm3 field configures the threshold below which a NOTE OFF message turns the note off As long as the note hasn t been turned off i e the signal stays above the NOTE OFF threshold the note cannot be re triggered For note on and note on with trigger threshold messages Prm2 specifies the ripple tolerance for the envelope The NOTE OFF threshold is then relative to the peak level of the envelope Setting the threshold for controller value change messages The P rm2 field configures the threshold above which the fixed value of the MIDI controller is sent The Prm3 field configures the threshold below which the controller value is set to zero As long as the signal hasn t gone below the threshold specified by P xm3 the fixed value of the MIDI controller may not be sent again Setting the program change threshold The P rm2 field configures the threshold above which the MIDI program change is
56. cally updated during a load operation or an activation deactivation of an analogue input with MIDI The liquid crystal display is updated when a menu is changed from the AtoMIC Pro keyboard 90 Section 4 Appendices rcam documentation Saving the current patch OxFO Beginning of SysEx 0x00 SysEx ID 0x20 0x39 rcam Device ID Indicate which device has to receive the SysEx message Ox7B SysEx Function number save current patch identifier OxF7 End of SysEx Rebooting AtoMIC Pro OxFO Beginning of SysEx 0x00 SysEx ID 0x20 0x39 rcam Device ID Indicate which device has to receive the SysEx message Ox7A SysEx Function number reset unit identifier OxF7 End of SysEx Exporting the custom lookup table OxFO0 Beginning of SysEx 0x00 SysEx ID 0x20 0x39 rcam Device ID Indicate which device has to receive the SysEx message 0x79 SysEx Function number save current patch identifier 128 values to be read written table content OxF7 End of SysEx From or to AtoMIC Pro Protocol is the same for a custom table dump in or dump out Those 128 bytes must be 7 bit long The seventh bit must be cleared 91 Section 4 Appendices rcam documentation Control of the digital outputs The control is done by sending AtoMIC Pro one byte of information on the
57. code 4 bits eleele MIDI channel number to which the message is applied 4 bits A Value of the 1 message parameter 7 bits AY Mw Value of the 24 message parameter 7 bits 37 Section 2 Interface configuration guide rcam documentation Message Parameter 1 Parameter 2 Note on note number note on velocity Note on Note off note number note off velocity Note off Polyphonic pressure note number pressure during note on Polyphonic aftertouch Control number change controller number controller value Control change Program change program number Program change Channel pressure pressure Channel aftertouch Variation of pitch strong weighting of pitch weak weighting of pitch Pitch bend MSB LSB If the message uses two parameters not in the case of a change in pitch the first parameter is specified in the Va1 field see further down whereas the second follows the variations of the signal on the analog input which is associated with the MIDI message Example controller value change message For a message of this type Control change the controller number is fixed when the converted analog signal controls the value of the controller Most Significant Byte Least Significant Byte 38 Section 2 Interface configuration guide rcam documentation List of MIDI messages generated by AtoMIC Pro Message Notation used on the L
58. connectors on the left and right hand sides of the device 15 pin Sub D Left view 20000000 o pp 5V Ground 13 25 pin Sub D 1 right view OOOOOOO0000000 Q GQ G QO000 25 42V 14 12V Ground 5V 28 Section 1 Introduction rcam documentation Monitoring signals on the Liquid Crystal Display LCD Two display screens enable the user to see the signals entering AtoMIC Pro These screens are used to make sure the sensors or measuring devices are functioning properly They also allow the user to check that the different signals are properly scaled To access these display screens move the flashing cursor towards the left arrow of the welcome screen lt AtoMIC Ready gt Patch 01 My Patch File MIDI Prefs Dump Out Spy lt lt Display Ch 1 gt Min Max EERE This first display screen shows one analog input out of thirty two The level of the signal is shown using a horizontal VU meter on the fourth line of the liquid crystal display The VU meter is made up of 20 spaces When these twenty spaces are filled in black the level of the signal is at its maximum To change the current channel number move the flashing cursor onto the Ch Channel analog channel number field Modify the channel number using the increment and decrement keys Inc and Dec 2 x Inc lt Display Ch 3 gt Min Max BEEBE EEE
59. duction system expander MIDI message proportional to the mechanical pressure applied onto its ae volum trol DER ee C Q volume control surface OOOece S585585 If the Var field is set to the analog MIDI interface MIDI OUT AUMICE will send a volume control message proportional to the o ro i i l mechanical pressure applied to the sensor To make it react ics am enl in the opposite way change the field value to 255 O4 YO Valid H d O Choice of MIDI message msg field This is one of the most important configuration parameters since it determines which type of MIDI message the device is going to send in response to variations in a particular analog input AtoMIC Pro is capable of generating 10 different messages These messages are based on the 7 MIDI channel messages and the MIDI System Exclusive messages The MIDI standard specifies 7 commands called channel messages Note on Note on Note off Note off Polyphonic pressure Polyphonic aftertouch Control number change Control change Program change Program change Channel pressure Channel aftertouch Variation in pitch Pitch bend 36 Section 2 Interface configuration guide rcam documentation These messages are usually made up of three groups one octet long as shown in the following illustration I II III HEECCCC OxxXXXXX Oyyyyyyy Header Parameter 1 Parameter 2 HHHH Message
60. dumping to the AtoMIC Pro rcam documentation 11 Section 4 Appendices rcam documentation NOTE When a byte is to be transmitted in two operations cut into two nibbles or 4 bit packets the least significant nibble is sent first and then the most significant one A nibble is transmitted in the least significant four bits of a byte the most significant ones are set to 0 op Eee 1 Gaga ca Te Most i Least i significant significant e Nibble Nibble eM ofofo fo fez fos fos ps 2 78 Section 4 Appendices rcam documentation Description of the layout of an AtoMIC Pro configuration patch In order to facilitate sending and receiving configuration patches using MIDI System Exclusive messages the dump message is made an exact copy of what is in the memory of AtoMIC Pro Since a byte in memory can contain several configuration parameters the following pages detail how the memory bytes are used bit by bit The parameter s contained in a byte are recalled by the field shown on the liquid crystal display The name of the variable in memory name of the byte is also shown Analog inputs Summary of the analog input parameters Active or inactive channel Stat field Type of MIDI message to be sent Msg field MIDI channel of the message MIDI Ch field Physical output of the MIDI message Out field Direction of signal variation Var field Number of the co
61. e Setting the controller value of controller value change with trigger threshold messages on page 49 e Program change with trigger threshold Prg Chg This message allows an analog signal to trigger a program change MIDI message using the idea of thresholds The program number is fixed when the device is in use but may be adjusted by the user along with the trigger threshold levels see Setting the MIDI program number on page 45 and Setting the program change threshold on page 50 This message can be used to simulate MIDI pedals which send program change messages e Pitch change P Bend This message allows an analog signal to generate a MIDI message of the pitch change type pitch bend Pitch is usually coded over 14 bits If the 7 bit resolution is chosen they will be mapped on the 7 most significant bits of pitch information controlled by the analog signal However since AtoMIC Pro does 10 bit conversions internally the whole 10 bits can be mapped to take better advantage of the pitch bend message This message is used to simulate the pitch changing wheels available on most MIDI keyboards e Polyphonic pressure Af Tch1 This message allows an analog signal to generate a polyphonic pressure type MIDI message polyphonic aftertouch The number of the note to which the pressure information is applied can be changed by the user see Setting the MIDI note number on page 45 Channel pressure Af Tch2 This message
62. e Dump Out item using the arrow keys and the Valid key AtoMIC Ready gt Patch 01 My Patch File MIDI Prefs Dump Out Spy Valid Dumping out patch Done AtoMIC Ready gt Patch 01 My Patch Load Save Prefs Dump Out Soy 87 Section 4 Appendices rcam documentation Receiving a dump with AtoMIC Pro Receiving a dump is dynamic When a dump message has been received without errors the following screen is shown briefly Dump received_ Exchanging dump messages To exchange configuration patches between two AtoMIC Pro interfaces all you need to do is connect MIDI cables from the input of one to the output of the other or the opposite depending on which is the sender and which is the receiver of the dump Don t forget to save the patch on the receiving unit 88 Section 4 Appendices rcam documentation Dynamic control of the AtoMIC Pro interface using MIDI System Exclusive messages System Exclusive messages received via the MIDI IN input allow the user to dynamically control the behaviour of AtoMIC Pro This can be done using MIDI equipment or software which is capable of generating MIDI System Exclusive messages like sequencers for example Some patches have been developed especially for a piece of software called Max to simplify the generation of these messages see the chapter Max objects and patches on pa
63. e are mapped on the ten most significant bits of the MIDI message which actually counts 14 bits For the control change message the 3 Most Significant Bits MSB are sent via the alternate controller number specified in menu 2 field Alt whilst the normal controller number exports the 7 Least Significant Bits LSB To obtain the 10 bit value the following calculation must be computed 10 bit value MSB controller value 128 LSB controller value 3L here stands for Low resolution while H stands for High resolution Refer to section 4 Appendices for more details about the structure of this message 53 Section 2 Interface configuration guide rcam documentation Setting the lookup table Table field Table LIN LOG EXP SPE This field allows the user to apply a mathematical function to the sampled value Four lookup tables also named conversion tables are available Linear Logarithmic Exponential or Special The linear table actually does not affect the value The special table allows the user to specify is own function the table s content being dumped in by a System Exclusive Message see Section 4 Appendices on page 73 Dumping out the current custom table is achieved by pressing both Inc and Valid keys at startup The message Export custom table will be briefly displayed The table feature is very useful for changing the response of a sensor A linear respons
64. e can be obtained from a logarithmic sensor by applying an exponential function and vice versa Setting the window size and offset window and offset fields Window 128 256 512 1024 Offset 0 Window 2 1 Those two parameters specify how the real range of an analog input can be mapped on a seven bit MIDI value As a matter of fact a sensor does not necessary have a range equal to the reference voltage of the Analog to Digital Converter see Changing the reference voltage of the analog to digital converter ADC Vref field on page 61 In version 2 0 we have implemented a custom scaled zoom on the digital value to take advantage of the 10 bit resolution of the A D converter First the voltage reference has to be set to the largest range among the sensors connected to the unit Then the user can select the sensor s range within the 10 bit dynamic by specifying a window size and an offset The selected range can then be converted into 7 bit MIDI data without greatly increasing the quantification step as shown in the next illustration R Only in the low resolution mode The table can be drawn within the Max software patch provided with the unit 54 Section 2 Interface configuration guide Digital value MIDI conversion MIDI data 10 bits 7 bits 1023 Window size real sensor range A 127 Offset ream documentation NOTE Only exponent two sizes are available for the window size
65. e replaced with rotating potentiometers since that is the type of potentiometer used on audio mixing desks 126 Section 4 Appendices fF Using piezoelectric sensors Piezoelectric sensors are made of a material which generates an electrical voltage when it is bent mechanically This type of sensor usually comes in the form of a metallic disk approximately 0 5 to 1 mm thick and of different diameters They are generally used to detect shocks and measure their intensity This is the case with MIDI drum kits which convert shocks into MIDI notes The signal from a piezoelectric sensor cannot be wired directly into the analog inputs of AtoMIC Pro and this for two reasons Certain sensors with a small diameter have too small an output voltage The signal is of the undulatory type and therefore incompatible with the envelope detection of AtoMIC Pro which only works for continuous signals A piezoelectric sensor must be connected to an electronic envelope extraction device so that the signal may be used by AtoMIC Pro Es Optional Not supplied with AtoMIC Pro but available in the form of a separate kit 127 Section 4 Appendices rcam documentation Electronic circuit of the envelope extraction system Lowpass filter C 4 e 12k L3 Active rectifier 12k TLOS4N da L1 Co Q _ 12k L 12k Il U1g z 5 6k 5 Piezo input 1
66. e using the device make sure you have read the following instructions carefully as well as the instructions for use Do not open or modify the device or its mains adapter except when this manual tells you exactly how to do so Do not try to repair the interface or the components inside it except when this manual recommends it Please contact IRCAM in case of problems Do not use the device or store it in the following conditions Extreme temperatures or exposed to direct sunlight Damp areas Dusty areas Areas prone to strong vibrations If you replace the main adapter make sure its output polarity voltage and current are correct Do not insert any objects or pour any liquid into the device Protect the device against violent shocks Before using the device in a foreign country make sure the main adapter provided is compatible with the main supply If the device will not be used for a long period disconnect the adapter from the mains Never place heavy objects on the device Never touch the device or the adapter with wet hands when it is plugged in Before moving the device make sure the mains adapter and or any external elements are disconnected from the unit Before cleaning the device make sure the mains adapter is electrical unplugged If the device is used somewhere where it is likely to be struck by lightning unplug it Copyri
67. e voltage of 5V see Changing the reference voltage of the analog to digital converter a threshold of 8 corresponds to a noise level of 40 mV ie the analog has to change at least of 40 mV above or under its current position to be detected as changing A threshold of 127 corresponds to a ribbon of 620 mV of noise lt 3 Chrl gt Filter SUBSAMP Nb Cycles 10 Noise Gates 2 Vref 5v 32 Section 2 Interface configuration guide rcam documentation Fourth menu for configuring the analog inputs menu 4 This menu is mainly related to data scaling Version two of the AtoMIC Pro features a 10 bit analog to digital converter and this capability can be very useful for zooming the signal from the sensor reducing the need to amplify it analogously lt 4 Ch 1 gt Res 7 L Table LIN Window 1024 Offset 0 Setting the data resolution Res field Res 7 L 10 H This field enables the user to select the resolution of the data he wants to export to MIDI When this field takes the value 7 L the normal MIDI resolution is chosen while choosing the value 10 H selects a 10 bit resolution When selecting the high resolution the MIDI message SysEx10 is by default selected in menu 1 but can also be turned to a control change message C Chg or a pitch bend message P Bend gt NOTE about the high resolution For the pitch bend message the 10 bits of the sampled valu
68. ection cable gt Amplifier N n GOOD ro Connection cable Noise W x Amplifier AtoMIC BAD Pro d2 d1 A certain number of sensors however do deliver a so called preconditioned signal i e preamplified and shaped Amplification is also necessary when the signals from sensors or other devices are too different in sensitivity or in level The signals must then be fed through an amplifying device with adjustable gain for each signal to be fed to the analog MIDI interface Refer to Section 4 Appendices on page 73 for more 23 Section 1 Introduction rcam documentation information on the conditioning and amplification of electrical signals Also consult the paragraphs entitled Changing the reference voltage of the analog to digital converter ADC Vref field on page 61 in section 2 Digital outputs The device is equipped with two 15 pin Sub D connectors located on the left hand side of the box The one on the right outputs 8 on or off signals also called digital TTL level signals Each one of these outputs gives out either 0 or 5 volts These signals may be used to control devices which work in a binary fashion i e with 2 states test light on or off for example Each output can deliver a maximum current of 10 mA If the device is used to control one or more outputs needing a higher current or voltage it will be necessary to build suitable electronic power amp
69. envelope detection using AtoMIC Pro NOTE The best way to get rid of the residual undulations of the envelope during its decrease in level is to increase the envelope length using the corresponding adjustable resistance on the conditioning module until you get the result you want 129 List of MIDI controllers N Function Value 0 Bank Select 0 127 MSB 65 Portamento on off lt 63 off gt 64 on 1 Modulation wheel 0 127 MSB 66 Sustenuto on off 63 off gt 64 on 2 Breath control 0 127 MSB 67 Soft pedal on off 63 off gt 64 on 3 Undefined 0 127 MSB 68 Legato Footswitch 63 off gt 64 on 4 Foot controller 0 127 MSB 69 Hold 2 63 off gt 64 0n 5 Portamento time 0 127 MSB 70 Sound Controller 1 6 Data Entry 0 127 MSB Sound Variation 0 127 LSB 7 Channel Volume 71 Sound Controller 2 formerly Main Volume 0 127 MSB Timbre 0 127 LSB 8 Balance 0 127 MSB 72 Sound Controller 3 9 Undefined 0 127 MSB Release Time 0 127 LSB 10 Pan 0 127 MSB 73 Sound Controller 4 11 Expression Controller 0 127 MSB Attack Time 0 127 LSB 12 Effect control 1 0 127 MSB 74 Sound Controller 5 13 Effect control 2 0 127 MSB Brightness 0 127 LSB 14 Undefined 0 127 MSB 75 Sound Controller 6 0 127 LSB 15 Undefined 0 127 MSB 76 Sound Controller 7 0 127 LSB 16 19 General Purpose 77 Sound Controller 8 0 127 LSB Controller 1 4 0 127 MSB 78 Sound Controller 9 0 127 LSB 20 31 Undefined 0 127 MSB 79 Sound Controller 10 0 127 LSB 32 Bank Select 0 127 LSB 80 83 Gen
70. eral Purpose 33 Modulation 0 127 LSB Controller 5 8 0 127 LSB 34 Breath control 0 127 LSB 84 Portamento Control 0 127 Source Note 35 Undefined 0 127 LSB 85 90 Undefined 0 127 LSB 36 Foot controller 0 127 LSB 91 Effects 1 Depth 0 127 LSB 37 Portamento time 0 127 LSB 92 Effects 2 Depth 0 127 LSB 38 Data entry 0 127 LSB 93 Effects 3 Depth 0 127 LSB 39 Channel Volume 94 Effects 4 Depth 0 127 LSB formerly Main Volume 0 127 LSB 95 Effects 5 Depth 0 127 LSB 40 Balance 0 127 LSB 96 Data entry 1 N A 41 Undefined 0 127 LSB 97 Data entry 1 N A 42 Pan 0 127 LSB 98 Non Registered 43 Expression Controller 0 127 LSB Parameter Number LSB 0 127 LSB 44 Effect control 1 0 127 LSB 99 Non Registered 45 Effect control 2 0 127 LSB Parameter Number MSB 0 127 LSB 46 Undefined 0 127 LSB 100 Registered Parameter 47 Undefined 0 127 LSB Number LSB 0 127 LSB 48 51 General Purpose 101 Registered Parameter Controller 1 4 0 127 LSB Number MSB 0 127 LSB 52 63 Undefined 0 127 LSB 102 119 Undefined 64 Damper pedal 120 127 Mode messages on off Sustain 63 off gt 64 on Index Index A Accessories 75 ADC Vref 108 ADC Vref field 61 64 122 Af Tch1 85 Af Tch2 85 Alt field 47 79 Alternate 81 Amplification 23 Analog Digital Conversion 75 Analog inputs 9 17 22 23 33 34 35 42 47 48 51 53 56 62 75 79 80 89 97 98 103 108 110 122 126 Analog to Digital Converter 60 61 108 Arrow keys 20 21 Aux field 47 79 B Backlite 3
71. essages on page 49 Controller value change C Chg This is the type of message which will likely be most often used for controlling sound parameters The value of the analog signal acts directly upon the value of a MIDI controller using a MIDI controller value change message control change The number of the controller can be set by the user see Setting the MIDI controller number on page 45 If 10 bit resolution is selected this message will actually send two control change messages The controller specified in the val field will send the 7 least significant bits whilst the controller specified in the alt field menu 2 will send the 3 most significant bits on the same MIDI channel Controller value change with trigger threshold C Chg Tr As with the note on with trigger threshold message this message allows a fixed value to be sent to a specific MIDI controller also using the idea of thresholds When the signal level reaches the first threshold the fixed value of the controller is sent by a controller value change type MIDI message control 43 Section 2 Interface configuration guide rcam documentation change When the signal reaches the second threshold the value of the specified controller is set to zero The thresholds are controlled by the user see Setting the threshold for controller value change messages on page 50 The controller value which is generated by the MIDI message is adjustable by the user se
72. field using the Valid key 3 To go ahead with restoring the factory settings move the flashing cursor onto the Yes field using the arrow keys and then press the Valid key Reset to Factory Settings Yes No Valid Init patch 1 The process of restoring the factory settings lasts about 40 seconds During that time a mini vertical bar graph will count down 15 times once per restored patch When the parameters has been restored the AtoMIC Pro interface displays the welcome menu Make sure not to disconnect the power supply from the device during the operation If this happens repeat steps 1 to 3 107 Section 4 Appendices rcam documentation Factory settings General Name of the patch No Name Contrast of the liquid crystal display 8 Ctrst 8 Reference voltage of the analog to digital converter 5V ADC Vref 127 MIDI preferences Device ID 1 ID 1 Receive MIDI channel 16 MIDI Ch 16 Program number 1 to 15 for patches 1 to 15 Program Nb 1 to 15 e LSB Digital outputs controller number 64 Ct r11 64 e MSB Digital outputs controller number 65 Ct x12 65 Analog inputs 1 to 32 Analog input inactive Stat OFF e Direction of variation positive Var e MIDI message control change Msg C Chg Note number Controller number 1 to 32 Val 1 to 32 e MIDI channel 1 MIDI Ch 1 Physical output 1 Out xxxO Control by a digital i
73. g a S lection de la sortie MIDI table object which stores the sequence to vers AtoMIC Pro Choose MIDI output change its aspect for AtoMIC Pro ID AtoMIC Valeur du compteur Counter value eee Simulation 118 Section 4 Appendices rcam documentation AtoMIC chenillard 2 pat AtoM IC chenillard 3 pat Chenillard pour AtoMIC Pro 2 3 Chenillard pour AtoMIC Pro 3 3 LEDs scrolling for AtoMIC Pro 2 3 LEDs scrolling for AtoMIC Pro 3 3 version 2 11 2000 version 2 11 2000 Compteur JOHNSON JOHNSON Counter S quence quelconque Editable sequence P riode du m tronome metronome period on off P100 ID AtoMIC counter 0 0 255 S quence de type ba S quence ditable compteur Johnson i p ID AtoMIC Cliquer sur la table pour Johnson counter modifier la s quence sequence Editable sequence Click on the table to edit the sequence Valeur du compteur Johnson Johnson counter Objet de contr le des value sorties logique d AtoMIC Objet de contr le des sorties logique d AtoMIC Logic outputs control ob ject Logic outputs control object S lection de la sortie MIDI vers AtoMIC Pro S lection de la sortie MIDI AtoMIC Pro vers AtoMIC Pro Choose MIDI output AtoMIC Pro for AtoMIC Pro Foy E L or Atol ro leise 0 Simulation BBC Simulation 119 Section 4 Appendices rcam documentation Independent control LED by LED If you wou
74. ge 95 Activating Desabling an analog input This instruction enables the user to change the status of an analog input It enables or disables the analog to MIDI conversion of a particular signal This instruction is identical to changing the status of an analog input from the user interface in the main configuration menu Stat ON OFF OxFO Beginning of SysEx 0x00 SysEx ID 0x20 0x39 Atomic Pro ID 1 16 Ox7E SysEx function number activation deactivation identifier of an analog input Input number Number of the input whose status is being modified 1 32 Status Desired status 0 lt gt inactive input 1 lt gt active input OxFE7 End of SysEx 89 Section 4 Appendices rcam documentation Loading a patch The instruction for loading a patch enables the AtoMIC Pro interface to load a configuration already saved in non volatile memory This instruction is identical to loading a configuration from the user interface Load menu OxFO Beginning of SysEx 0x00 SysEx ID 0x20 0x39 Atomic Pro ID 1 16 Ox7C SysEx function number patch load identifier patch N Number of patch to be loaded 1 20 OxF7 End of SysEx NOTE1 You are advised to perform the loading of patch operations only when the sensors or measuring devices connected to the device are at rest NOTE2 For optimisation reasons the liquid crystal display is not automati
75. ght 1998 2002 IRCAM All rights reserved No parts of this document may be reproduced without permission of IRCAM IRCAM may only be held responsible for damage caused to devices connected to the AtoMIC Pro inter face if its use conforms to these instructions Table of Contents rcam documentation Table of Contents About ATOMIC Pro neh oui Et HERO HB S Qo RISUS ERN Uh Ant 9 Main characteristics 2 53 53 rires sers er tee apt 9 LuUEIDPAIDDI MEC 9 Digital inp ts isses lem ei ireen a tende Lee ee eese elles ee EE 9 Digital o tputs i32 pr ann qu de Sn wee Rei MIU WS RM wha V E 9 MIDHEQOUtplts e teme et tee ore ge Ue atreve rece yr tare egens eec den nee 9 MIDI input sues adoptees mci eaves Ie Det Te Acie e Sup qud wads Sa ee Red 10 Liquid Crystal Display LCD and keypad 10 Non volatile Memory 2 x2 3 outer verti or eese Ru essei nor VR ode e lade 10 Comments on the use of the device 11 Power supply issar Ata ew Be PA Oe es a I T RULES 11 Arrangement and storage 11 Maintenance sin fn bebe emen soot une bebo ce istnd Je Uri et see eben 11 Repairing the device see rex u eek ann Rd ARI derer E VANAR Pr 11 Additional precautions 12 Layout of the user manual cc cec de date nn c aes RC lea aa oe S DR TR e ee 13 User inte
76. ging with time and a reference voltage set to five volts Signal 1 has a maximum level equal to the reference voltage and the scale of digital values is fully used Signal 2 however has a maximum level of 2 5 volts The result of the analog digital conversion will give values between 0 and 512 only half of the resolution of the converter is not used With AtoMIC Pro the reference voltage can be adapted to the analog signals to be converted if however the signals have very different maximum levels the weaker signals have to be amplified Broadly speaking the reference voltage should be aligned with the analog input with the highest level 62 Section 2 Interface configuration guide rcam documentation gt WARNING The analog signals must never exceed the reference voltage of the converter This could damage it Reference voltage Digital value Dead areas 3V Maximum range of the signals 0 Analog signals In the above example the maximum level of the signals being 3 volts the reference voltage has been set to the same level Certain other signals have lower maximum values which means there are some dead areas in the resolution of the converter It is recommended that these areas be eliminated by amplifyingthe relevant analog signals NOTE It is possible to get rid of the dead areas by setting the zooming scale for the signal This method is however not always as efficient as an analog amplificat
77. h is too strong appears in MIDI Spy mode Display can be cleared and reset by pressing the Valid key NOTE3 While in the MIDI Spy screen analog to MIDI conversion will still be active but slower if MIDI messages enter the device and are displayed i Displaying data on the LCD consumes a lot of processing time 71 12 Section 3 Connections using MIDI ream documentation Section 4 Appendices rcam documentation These appendices give further information about S e C t i O n 4 the System Exclusive protocol used for exchanging information between AtoMIC Pro and other MIDI devices A e n d C e S This section also shows some practical examples using AtoMIC Pro Appendices Content MIDI implementation chart Design specification Dump using System Exclusive messages Max objects and patches Installation Configuration patch Dynamic control patches In case of problems Replacing the fuse and the mains adapter Restoring the factory settings Powering with batteries Amplifying analog voltages Design examples Running lights controlled by MIDI Using a Force Sensing Resistor FSR MIDI mixing desk Using piezoelectric sensors List of MIDI controllers 73 Section 4 Appendices rcam documentation Analog to MIDI Converter Date june 2002 Model AtoMIC Pro Version 2 00 MIDI IMPLEMENTATION CHART
78. ing the MIDI preferences of the unit This menu enables to setup parameters related with the MIDI configuration of the unit AtoMIC Ready gt Patch 01 Patchl File MIDI Prefs Dump out Spy Valid MIDI Prefs gt Program Nb 1 Ctrl1 64 Gt ri2265 Setting the identification number of the unit rp field ID 1 16 Changing the unit ID is useful when several AtoMIC Pros are connected on the same MIDI port As a matter of fact the System Exclusive messages contain a byte that indicates to which unit the message is destined Change the ID value if you wish to distinguish one unit from the other when they are receiving a System Exclusive message from the same MIDI link a Setting the receive MIDI channel mrpr cn field MIDI Ch 1 16 Since AtoMIC Pro accepts standard MIDI messages such as control change and program change a MIDI channel must be associated to the unit s especially when several MIDI devices share the same MIDI port Change the value of the MIDI channel of the unit if it is already used by another device Especially when sending a SysEx message dumping in a configuration 8By default the receive MIDI channel is set to 16 to avoid conflict 65 ream documentation Section 2 Interface configuration guide Setting the MIDI controller numbers ctr11 and ctr12 fields Otrlli Otrl2 9 121
79. into the device and that the device isn t powered up before you follow the instructions given bellow Replacing the fuse If the power on light of the AtoMIC Pro interface does not light up and the mains adapter works correctly you should change the fuse which may be faulty Unscrew the 4 screws from the bottom of the device using a Phillips screwdriver Gently take the top lid off the device and put it down The fuse sits in a holder situated in the top left hand corner of the liquid crystal display on the lower plate The fuse is of the 250 V 1 Amp temporised blow type Take the fuse out using a small screwdriver and replace it with a new fuse Put the lid back into place as well as the 4 screws and then power up the device to ensure it is working properly Replacing the mains adapter The mains adapter supplied with AtoMIC Pro is designed for use with the French mains supply which functions at 230 V Mains adapter alternating 50 Hz If your mains supply is 12V 800 mA not compatible with these specifications Mains you should replace the mains adapter The gt output voltage of the mains adapter should m be a constant 12 Volts DC or the symbol 77 The power connector to be plugged into the back of AtoMIC Pro is a female Canon connector The internal diameter of the connector is 2 1 mm f Fem
80. ion Refer to the paragraph entitled Setting the window size and offset Window and Offset fields on page 54 for more details on this operation 63 Section 2 Interface configuration guide rcam documentation Adjustment Move the cursor onto the ADC Vref field and modify the value of the field according to the reference level you want lt Prefs gt Rename 01 NomPatch Ctrst 8 ADC Vref 114 The reference level is coded to give a value between 0 and 127 The value zero corresponds to a reference voltage of 0 volts and 127 to a reference voltage of 5 volts Intermediate values modify the reference voltage in 39 mV steps approximately NOTE Conversion table Reference Field voltage volts ADC Vref qu 1 It is possible to adjust the reference 1 50 38 voltage between 0 and 5 volts but you are 175 44 advised to keep it between 1 5 and 5 volts l values 38 to 127 to maintain immunity to 2 00 50 noise If the analog signals used do not 2 25 57 reach a maximum level of 1 5 volts you will 2 50 63 have to amplify them in the analog domain beforehand 2 7 7 3 The reference voltage is a global 3 00 76 parameter and cannot be saved for each 3 25 83 individual configuration patch 3 50 89 3 75 95 4 00 102 4 25 108 4 50 114 4 75 121 5 00 127 64 Section 2 Interface configuration guide rcam documentation Chang
81. iquid Crystal Display Note on N O Note on polyphonic pressure N ON Af Note on with trigger threshold N ON Tr Controller value change C Chg Controller value change with trigger C Chg Tr threshold Program change with trigger threshold Prg Chg Pitch change P Bend Polyphonic pressure Af Tchl Channel pressure Af Tch2 10 bit exclusive message SysEx10 Af Aftertouch Tr Threshold P Bend Pitch bend 39 Section 2 Interface configuration guide rcam documentation Note on message N ON The analog signal must correspond to an envelope changing with time and which has a maximum value AtoMIC Pro analyses this envelope and finds the largest peak Once it has been found a MIDI note on message NOTE ON is generated The velocity associated with the note is equal to the maximum of the envelope The note number contained within the message is adjustable by the user see Setting the MIDI note number on page 45 NOTE ON message is Envelope generated Relative NOTE OFF threshold NOTE OFF message is Actual generated NOTE OFF threshold t NOTE OFF t As long as the envelope stays above a threshold named NOTE OFF threshold the note is maintained no new MIDI message is sent When the level falls beneath the NOTE OFF threshold a MIDI NOTE OFF message is sent to turn the note off The NOTE OFF threshold is relative to the maximum detected envelope level Once the peak level has been f
82. its name indicates the analog to MIDI interface converts one or several analog electrical signals into MIDI messages In the case of AtoMIC Pro these signals must be voltages larger than or equal to zero and smaller than or equal to 5 volts Negative voltages are to be avoided as they can damage the device just as voltages over 5V can The purpose of AtoMIC Pro is to convert electrical signals which are representative of a physical phenomenon or dimension mechanical pressure temperature distance between two points into musical information using the MIDI standard Thus the measurement of a physical dimension can be used to generate music or to act upon some parameters of sound master volume panpot effects volume The device is equipped with two 25 pin Sub D connectors located on the right hand side of the box These connectors are used to input the analog signals into the device so it can convert them into MIDI The value of the impedance of the analog inputs is 1MQ Not only can the analog signals come from complex measuring devices but they can also come from ordinary sensors as long as their dynamic range is compatible with AtoMIC Pro 13 1 CS roc 25 14 Pin n Function 1 16 Analog inputs 1 to 16 17 to 32 on the second connector 17 Not connected 18 21 Ground 22 23 5V 24 12V 25 12V 22 Section 1 Introduction rcam documentation The device first
83. l entr e analogique activer 1 OFF d sactiver Input number to toggleinput 1 1 toggle ON OFF S lection de la sortie MIDI AtoMIC Pro vers AtoMIC Pro Choose MIDI output for AtoMIC Pro Pour des raisons d optimisation l cran cristaux liquides n est pas automatiquement mis jour lors de l activation d sactivation d une entr e analogique via MIDI L cran cristaux liquides sera mis jour lors d un changement de menu effectu depuis le clavier d AtoMIC Pro For optimisation reasons the LCD is not automatically updated when setting an analog input to an ON OFF status through MIDI The LCD is updated when you change pages with the keyboard of AtoMIC Pro 98 Section 4 Appendices rcam documentation Loading a configuration patch The load patch instruction is sent using the patcher called loadpatch oaa Joadpatchhelp Entr es num ro du patch charger 1 15 bang loadpatch pour d clencher le chargement v 2 11 2000 Sortie message SysEx Arguments entiers Coptionnels ID et patch charger Inlets patch number to load 1 15 bang to trigger the load Qulet SysEx message Arguments Optional int ID and patch to load D clenche le chargement d un patch de configuration pr alablement stock dans la m moire non volatile d AtoMIC Pro Triggers the load of a configuration patch previously stored into the non volatile
84. ld like to control each LED separately consult the help patch of the Jogicout2 patcher which enables the control of the digital outputs bit by bit O 8 v logicout2 help E lo gicout2 Entr es tats d sir s des sorties logiques 8 bits Sortie message SysEx v 2 11 2000 Argument Entier optionnel ID Inlets status of the logic outputs 8 bits Argument Optional int ID Oulet SysEx message Contr le les sorties logiques d AtoMIC Pro Drives the digital outputs of AtoMIC Pro Le patcher logicout2 permet de contr ler l tat des sorties logiques d AtoMIC Pro 0 59 Pour cela un message SysEx est envoy AtoMIC Pro par la liaison MIDI Le patcher logicout2 recoit directement l tat des 8 sorties logiques The logicout2 patcher allows you to set or clear the logic outputs of AtoMIC Pro 0 5V This is completed by a SysEx message sent to AtoMIC Pro through MIDI The logicout2 patcher receives directly the desired states of the logic ouputs Tout allumer Tout teindre All On All Off 8 7 6 5 4 3 2 1 Activer d sactiver des sorties o a a el m m Toggle ON OFF logic outputs dS ID 1 16 logicout2 1 2 Po 3 Valeur d cimale equivalente aux 8 tats des sorties logiques Sortie MIDI vers po AtoMIC Pro Decimal value coding the states AtoMIC Pro of the 8 logic ouputs Choose MIDI output for AtoMIC Pro Voir aussi logicout help See also logicout3
85. lifying device Pin n Function 1 8 Digital outputs 1 to 8 9 13 Ground 14 15 45V The state of these outputs is controlled by MIDI using System Exclusive messages on the MIDI IN of the device Read section 4 Appendices the paragraphs entitled Running lights controlled by MIDI and Dynamic control of AtoMIC Pro using System Exclusive messages for more details on control operations on the digital outputs gt WARNING When AtoMIC Pro is powered up the digital outputs briefly take on the value 1 5V Please make sure the devices connected to the digital outputs do not risk being damaged or injuring anyone near the installation high power electric motors pneumatic equipment etc 24 Section 1 Introduction rcam documentation Digital inputs The second 15 sub D connector situated on the left hand side of the box to the left of the connector for the digital outputs enables the analog MIDI interface to receive 8 digital TTL level signals These inputs are designed to receive signals of 0 or 5 V generated by devices working in binary pedal which is either fully up or fully down for example OOOOO0000 O OOOOO00 15 Pin n Function 1 8 Digital inputs 1 to 8 9 13 Ground 14 15 5V These inputs have two functions The first when the eight inputs are used simultaneously is to convert the information from 8 bit binary information in
86. mpact of the stick on the cymbal The pedal which is connected to the digital input tells the analog MIDI interface which tone MIDI note number to send the sound producing system in accordance with the MIDI standard of percussion sound banks 26 Section 1 Introduction Arcam Analog MIDI interface Analo input 3 e gt Closed cymbal note p h oe MIDI MIDI 09 Open cymbal note message Envelope Digital inputs 4 p C 1 The selection of one or the other of the notes is performed as a function of the state of the chosen digital input The number of the input is also configurable out of the eight available inputs Refer to the paragraphs entitled Second menu for configuring the analog inputs menu 2 on page 47 and Fifth menu for configuring the digital inputs menu 5 on page 56 in section 2 for more details on this type of operation 27 Section 1 Introduction rcam documentation Exporting supply voltages In order to make powering the active measuring devices i e those devices requiring a power supply easier AtoMIC Pro exports its own supply to an outlet This supply is regulated and protected inside the device and gives the following DC voltages 5 volts for a maximum current of 300 mA 12 volts for a maximum current of 80 mA 12 volts for a maximum current of 80 mA These voltages are available on the Sub D
87. nfiguration parameters for the analog and digital inputs and to send them to AtoMIC Pro in the form of a dump using a MIDI System Exclusive message This Max patch also enables the user to receive a configuration patch sent via a dump from AtoMIC Pro and to display it on the screen This patch can be used also to load and save various configuration patches on the computer hard disk AtoMIC 2 config pat Oe version 2 20 11 00 Patch de configuration d AtoMIC Pro Configuration patch for AtoMIC Pro CONFIGURATION MIDI Selected Atomic ID sse a s sysex_to_atomic vit Configuration des entr es logiques Digital inputs settings 5 MIDI PREFS Digital Inputs ID MIDICh Ctrlt Ctri2 ADC VRef Patch Name On Off Msg Val MIDI Ch MIDI Output b bie be bes biz No Name lt Click here to O ms ys b b ooo00 change patch name 8 chars max Configuration des entr es analogiques Analog inputs settings ANALOG INPUT N P MESSAGES initialisation de l interface aux param tres par d fauts Default parameter refresh refresh digital Filter Nb Cycles Noise Gate Select Win size then Offset read Op rations de Lecture Ecriture ma Read Write operations Stat ver Msg Val MIDICh Out initialisation 1 0 Come 1s EE EHE 3 bo Ce refresh general r Envoi de la configuration ux AK Prmi Prm2 Prmi Res Table
88. ng the name of a patch the contrast of the Liquid Crystal Display and the reference voltage of the Analog to Digital Converter on page 60 20 Section 1 Introduction ream Modifying a parameter From the welcome menu go to configuration menu number 1 labelled 1 on the first line of the LCD using the right arrow key The liquid crystal display then shows the following menu lt 1 Ch 1 gt Stat OFF Var Msg N ON Af Val l MIDI Ch 1 Out XxxO To modify a parameter use the arrow keys to position the flashing cursor on the field of the chosen parameter Change the value using the increment and decrement keys Inc and Dec situated to the right of the arrow keys For example place the cursor on the Stat field status of an analog input active or inactive Pressing on the Inc or Dec keys will change the value of the field ON or OFF lt 1 Chat gt Stat OFF Var Msg N ON Af Val l MIDI Ch Out XxxO Inc lt 1 Ch 1 gt Stat ON Var Msg N ON Af Val l MIDI Ch 1 Out xxxO Since certain parameters have a high number of values 128 for MIDI parameters it is possible to increment or decrement quickly the value of a parameter by keeping the Inc or Dec key pressed for at least a second The values change rapidly then until the key is released 21 Section 1 Introduction rcam documentation Analog inputs As
89. nput inactive Aux OFF e Alternative value 64 Alt 64 e Multipurpose parameter 1 O Prm1 0 Multipurpose parameter 2 20 Prm2 20 Multipurpose parameter 3 127 Prm3 127 e Noise gate threshold 8 Noise gate 8 Data filtering subsampling Filter SUBSAMP e Filter iteration number O Nb cycles 0 Resolution 7 bit MIDI Res 7 L Lookup table Linear Table LIN Window size 1024 Window 1024 Window offset 0 Offset 0 Digital inputs 108 Digital inputs inactive Digital inputs OFF MIDI message no message Msg No Msg e Note number Controller number 0 Val 0 MIDI channel 1 MIDI Ch 1 Physical output 1 Out xxxO Section 4 Appendices rcam documentation Powering with batteries AtoMIC Pro is designed to work with a minimum voltage of 12 volts DC for 200 mA excluding the backlite of the liquid crystal display However AtoMIC Pro can function on 9 volts but will draw a current of 300 mA This voltage can be obtained with a 9V battery reference PP3 which doesn t have much charge 500 mAh In order to extend the time available when powering with batteries the best solution is to use eight 1 5V batteries wired in series To do this use one or two battery holders 1 x 8 or 2 x 4 batteries 8 batteries in series Wire the batteries to AtoMIC Pro using a Canon type power plug with
90. ntrol bit of an analogue channel by a bit of the digital input Aux field e Five parameters which give the content of the MIDI message Val Alt Prml Prm2 and Prm3 fields Filter type Filter field Filter iteration number Nb Cycles field Noise gate threshold Noise Gate field Window size Window field e Window offset Of f set field Resolution Res field Lookup table Table field 79 ream Section 4 Fe Appendices reat Layout in memory of the configuration data for the analog inputs Filter b7 b6 b5 b4 b3 b2 bl bO Noisegate b7 b6 b5 b4 b3 b2 bl bO Config1 b7 b6 b5 b4 b3 b2 bl bO 80 5th bit 0 4th bit 0 Bit 7 0 lt gt Subsampling filter Filter field SUBSAMP 1 lt gt SpeedLim filter Filter field SPEEDLIM Bits 6 0 Filter iteration number Nb Cycles field Bit 7 0 lt gt 7 bit MIDI resolution Res field 7 L 1 lt gt 10 bit high resolution Res field 10 H Bits 6 0 Noise gate threshold Noise Gate field Bit 7 Stat field 0 lt gt Status OFF 1 lt gt Status ON Bit 6 0 lt gt Positive variation Var field 1 lt gt Inverse variation Var field Bits 5 4 Window Size Window field Bits 3 0 Aux selection A
91. o rcam documentation Comments on the use of the device In addition to the Safety instructions at the beginning of this document the following pages explain maintenance procedures for the device when it is to be moved or used Power supply Do not plug the device into a domestic mains circuit in which are also plugged one or several high power devices capable of generating electromagnetic interference such as electric engines or dimmer switches The mains adapter may start to heat after long periods of use This is perfectly normal and is not a sign of malfunction Before connecting AtoMIC Pro to other devices switch off the power to all devices This precaution significantly reduces the risk of failure of the device or of those connected to it Arrangement and storage Using the device next to power amplifiers or devices with large power transformers may disrupt its operation In order to avoid any problems change the orientation of the device or move it as far away as possible from the source of interference Do not leave the device in direct sunlight next to sources of heat in a closed vehicle or in areas prone to extreme temperatures Excessive heat may warp or discolour the box of the device Maintenance For regular cleaning of the device use a soft fluff free cloth on the box Never use water or detergents Never press on the liquid crystal display Never use hydrocarbons thinners alcohol acids or s
92. ob INS 10pF Ave HAVA i a a ex Tosa E p 3 5 i L 3 a G DE as lys 8 g IMS o ells 2 o al Diode pump t 4 c o G 9 2 at O Positive and negative clamping Ee Ee B o 5 Le T s 19 US14 bo i Output to AtoMIC Pro D5 D 1N4148 R12 r3 Output gain pe NO In the illustration above the first part of the circuit is a signal rectifier for the piezoelectric sensor which eliminates all negative components which could damage AtoMIC Pro This signal is then filtered and put through a circuit which controls the decrease in level of the envelope The envelope which is obtained is then amplified and sent to an analogue input of AtoMIC Pro The two variable resistors R1 and R2 control two aspects of the envelope extraction The shape of the envelope In order to suppress the residual undulations in the decreasing phase of the signal the parallel circuit R1 R11 C3 fixes the decrease time of the envelope This time is adjustable from 680 us to 32 ms using the adjustable resistor R1 The output gain to adapt the level to that of the different piezoelectric sensors already in use R2 These two controls must be adjusted for each sensor There is no default setting since the amplitude and time of resonance of the sensor depends not only on its diameter but also on the surface it is attached to 128 Section 4 Appendices rcam documentation Configuration example of
93. olvents on the device or the box will warp or get discoloured Repairing the device Itis important to note that data saved in the device may be lost when the device is sent away to be repaired When the device is being repaired precautions are taken not to lose any data but it is impossible to guarantee this especially when the memory circuit is replaced 11 About AtoMIC Pro rcam documentation Additional precautions Itis important to get the data back into memory once it has been lost due to repair It is recommended that this data be backed up as often as possible using a MIDI device or a computer with a MIDI interface see Section 3 Connections using MIDI on page 67 Itis recommended you be careful when manipulating buttons or connectors on the device Brusque manipulation of the device may lead to failure or malfunction Do not touch hit or apply strong pressures to the liquid crystal display of the device Connecting disconnecting cables must be done holding the connector itself and not the cable it is joined to Never pull or push on the cable that way you will avoid breaking cables and creating short circuits When carrying the device it is recommended if at all possible to place it in its box along with its instruction manual 12 About AtoMIC Pro rcam documentation Layout of the user manual This manual details how the analog MIDI interface works what the different parameters
94. or further information or if you have doubts about its compatibility with the MIDI standard 69 Section 3 Connections using MIDI ream MIDI Spy The MIDI Spy is accessible from the welcome screen Move to the Spy item with the keypad arrows then press the Valid key lt AtoMIC Ready gt Patch 01 Patchl File MIDI Prefs Dump out Spy Valid lt MIDI Spy gt This screen allows the user to monitor any entering MIDI message including System Exclusive messages This can be very useful for checking debugging a MIDI installation without a computer The messages are displayed on the third line of the LCD Message Type MIDI Channel Data Byte 1 Data Byte pu For instance the next screen displays a Control Change message on channel 4 controller number 7 for a value of 48 lt MIDI Spy gt C Chg 4 7 48 Note number controller number or program number for instance Refer to the MIDI standard specifications for more details on the structure of a MIDI message 10 Optional Some MIDI messages are composed only of two bytes Note velocity or controller value for instance 70 Section 3 Connections using MIDI ream documentation NOTEI In the case of a System Exclusive message only the first nine bytes will be displayed on the LCD NOTE2 Display errors may occur when a MIDI activity whic
95. ound AtoMIC Pro calculates an actual NOTE OFF threshold from the value of the relative threshold Actual threshold Max relative threshold The relative NOTE OFF threshold is adjustable by the user in another configuration menu see Setting the NOTE ON and NOTE OFF trigger thresholds on page 50 To sustain the note for a long period of time you just need to give a large value to the relative NOTE OFF threshold Conversely to make the note stop shortly after the peak has been detected you need to set the relative NOTE OFF value quite low This type of message is useful in using sensors to simulate MIDI keyboards which are sensitive to velocity l In most MIDI keyboards the method for determining the intensity of a note is based on the measurement of veloc ity and not pressure or force 40 Section 2 Interface configuration guide rcam documentation Note on message with polyphonic aftertouch N ON Af This message works in the same way as the note on message except that a polyphonic pressure message polyphonic aftertouch is sent as long as the note is on The amplitude of the polyphonic pressure is calculated in the following way pressure signal t actual NOTE OFF threshold Thus the bigger the relative NOTE OFF threshold actual NOTE OFF threshold is small the bigger the dynamic range of the polyphonic pressure E NOTE ON message nvelope is generated Relative NOTE OFF threshold NOTE
96. our all you need to do is the following 1 Ch 4 gt Stat ON Var Msg C Chg Val 10 MIDI Ch 2 Out XOXO 46 Section 2 Interface configuration guide rcam documentation Second menu for configuring the analog inputs menu 2 2 Ch 1 gt Aux OFF Alt 64 Prm1 0 Prm2 0 Prm3 127 Setting the digital input number aux field Aux OFF 1 8 This field enables the user to select the digital input number which is to control the fixed parameter of a MIDI message see Setting the fixed parameter of a MIDI message Va1 field on page 45 This field may take 9 values OFF 1 to 8 When the field is set to the value OFF none of the digital inputs control the behaviour of the MIDI message In the other cases the field takes the number of the associated digital input 1 to 8 Selecting an alternative value ait field Alt 0 127 This field allows the user to control the alternative value of the fixed parameter of a MIDI message If a TTL digital input is used and it is in state 1 4 5V that is the value which is used as the fixed parameter of the MIDI message This field is also used to specify the second controler number when a 10 bit value is transmitted with a control change message 47 Section 2 Interface configuration guide bream lt 1 Ch 16 gt a Stat ON Var Msg N ON Val 40 MIDI Ch 2 Out XOXO lt 2 Ch 16 gt b Aux
97. rface and connectors 5 ecl oho oe eee E er as 14 Internal architecture of AtoMIC Pro 17 Section 1 Introduction 19 Powerin p vocero cowering eden edt Eben Lacu d ba ANR MR A Lodo A adonde 19 Welcome screen Scrolling through the menus 20 Modifying a parameter uz ecu 4428s Ghia Re WO GO RO A MR dac nA REO A 21 Analog qmputs s ue bestias aad ee Pedes arose tei t ns e 22 Dieuaboutpuls 52552 206g bos uut at tcp der datos Patek o dab at ole ot d e 24 Dita Inputs oos it es d oS Ee wed oce stica DER toic LUN P Sra d T Gao ER TOR 25 Example MIDI Charleston cymbal 26 Exporting supply voltages 6 55465 bend ey Ses Het ee c en ate c bnt gea les 28 Table of Contents rcam documentation Monitoring signals on the Liquid Crystal Display LCD 29 Controlling the backlite of the liquid crystal display 31 Section 2 Interface configuration guide 33 Before modifying the configuration of the device 33 Memiory banks Patches u 2 unser DEDE P EpLPCETUPHU ERE RUE EE NT CERE 33 Connection to sound producing equipment 33 Main menu for configuring the analog inputs menu 1
98. s socket Has the Power ON light come on Try plugging the mains adapter into another mains socket f you are using a mains adapter which isn t the one which came with the device make sure it is of the right polarity The fuse of the device or of the mains adapter may be faulty Refer to the section on Replacing the fuse and the mains adapter No MIDI OUT data the data out light does not come on Are the analog signals correctly linked to the device Check the analog input connections Are the relevant analog inputs active Stat ON Check the status of the relevant inputs Are the signals visible on the vu meters of the liquid crystal display Check the threshold settings if you are using MIDI messages with thresholds Turn the reference voltage down on the converter if necessary Change the type of MIDI message used for the relevant analog inputs and choose a control change message This message will send messages which follow the changes in value of the analog inputs and this should turn one or more data out lights on No MIDI OUT data the data out light does come on Are the MIDI devices connected to AtoMIC Pro functioning correctly Are the MIDI cables plugged in correctly Check that the different devices work correctly that the cables are plugged in correctly and that they are not damaged Is the right MIDI output selected with the out field 103 Section 4 Appendices rcam documentation The
99. sent As long as the signal doesn t go below the threshold specified by Prm3 the MIDI program change message cannot be sent again 50 Section 2 Interface configuration guide rcam documentation Third menu for configuring the analog inputs menu 3 This menu is related to data filtering AtoMIC Pro will basically output a MIDI message if the analog signal has changed in a relevant way If the analog signal is not stable many MIDI messages will be generated slowing down the system To get rid of this digital values can be processed with a filter and a noise suppressor configurable in this menu lt 3 Ch 1 gt Filter SUBSAMP Nb Cycles 0 Noise Gate 8 Setting the filtering algorithm Filter field Filter SUBSAMP SPEEDLIM This field enables the user to select the kind of filter he wants to use SUBSAMP is a subsampling filter also called downsampling filter It will make AtoMIC Pro analyse the analog input not every scan cycle Thus fast changes on the signal will not be detected resulting a low pass filter The number of wasted cycles is configured in the Nb Cycles field The SPEEDLIM filter is a bit different it will update the MIDI value only if the analog signal has remained stable for x cycles In that case also the number of cycles is setup in the Nb Cycles field Both filters affect the resolution of the MIDI message since some events might be masked by the algorithm However it avoids
100. to MIDI This method is very useful when a measuring device outputs a digital result over 8 bits This result may be sent directly to AtoMIC Pro via the digital inputs and converted into a MIDI message When the TTL digital inputs are used separately bit by bit the state of a particular digital input may act dynamically on a parameter of the MIDI message associated with an analog input When the digital input under consideration is at logic state O i e zero volt the parameter normal of the MIDI message is used When the input is at logic 1 i e five volts another parameter configured by the user is used for the MIDI message 25 Section 1 Introduction rcam documentation Example MIDI Charleston cymbal Sensor N NN N PAS MIDI sound Envelope production detector system expander 4 MIDI message Pedal 0 5 volts MIDI OUT AtoMIC Pro p ro Dump Out Spy O O66 Digital ems d Input 1 H 5 E This illustration shows how an electronic Charleston cymbal works The point of this setup is to produce two different tones depending on the position of the pedal open or closed cymbal A sensor gives a signal which measures the amplitude of the resonance of the cymbal The envelope of this signal is worked out then transmitted to the interface This configuration then generates a MIDI note with a velocity proportional to the i
101. to pressure C1 plastic capacitor 220 nF The user may choose which analog input to use The user can choose also to connect the FSR sensor onto one of the inputs 17 to 32 AII that needs to be done is to plug the 25 pin male Sub D connector onto the second female Sub D connector of the analog inputs NOTE The potential divider shown above is not perfect since the resistance of the sensor cannot go below 1kQ The output voltage of this configuration can therefore never reach 5 volts To counterbalance this effect the reference voltage of the Analog to Digital Converter may be turned down Prefs menu ADC Vref field to maximise its resolution 122 documentation Section 4 Appendices rcam Reference FSR sensor Manufacturer International Electronic amp Engineering FSR models FSR 149 FSR 150 FSR 151 FSR 174 Manufacturer s website http www iee lu MIDI mixing desk The idea is to use a group of 16 linear potentiometers to control the level of 16 MIDI channels These potentiometers are identical to the ones used on the channels of an audio mixing desk The 16 analog signals between 0 and 5 volts from the potentiometers are converted into MIDI volume controllers controller number 7 on each of the 16 MIDI channels 15 Linear potentiometers also called faders 123 Section 4 Appendices rcam documentation Wiring diagram
102. uipment may lead to hazardous sound levels for people nearby as well as for the equipment itself especially the loudspeakers 39 Section 2 Interface configuration guide rcam documentation Main menu for configuring the analog inputs menu 1 The main configuration menu is accessed from the welcome screen by moving the flashing cursor towards the right arrow menu 1 AtoMIC Ready gt Patch 01 My Patch File MIDI Prefs Dump Out Spy gt lt 3 Che gt Stat OFF Var Msg N ON Af Val l MIDI Ch 1 Out XxxO On this screen are the name of the patch the selected field of the analog input for which the configuration is to be modified and six parameter configuration fields Menu number Selection of the Analog input lt 1 Chi gt Stat OFF Va Ed Msg N ON Af Val 7 MIDI Ch 1 Out Xxx0 Parameter fields Before making any modifications to the displayed configuration make sure it corresponds to the analog input configuration you want to alter 34 ream documentation Section 2 Interface configuration guide Analog input status stat field Stat ON OFF The Stat field indicates whether the signal on an analog input should be converted into a MIDI message This field may be set to one of two values ON or OFF If the field is set to OFF the input is said to be inactive and no MIDI message relating to that input will be generated e
103. ut A weight represented as a power of two multiplied by the state of the bit itself is then associated with each bit 100 Section 4 Appendices rcam documentation logicout2 a v S Iogicout2 help pri E logicout2 Entr es tats d sir s des sorties logiques 8 bits Sortie message SysEx v 2 11 2000 Argument Entier optionnel CID Inlets status of the logic outputs 8 bits Arqument Optional int CID Oulet SysEx message Contr le les sorties logiques d AtoMIC Pro Drives the digital outputs of AtoMIC Pro Le patcher logicout2 permet de contr ler l tat des sorties logiques d AtoMIC Pro 0 5V Pour cela un message SysEx est envoy AtoMIC Pro par la liaison MIDI Le patcher logicout2 recoit directement l tat des 8 sorties logiques The logicout2 patcher allows you to set or clear the logic outputs of AtoMIC Pro 0 5V This is completed by a SysEx message sent to AtoMIC Pro through MIDI The logicout2 patcher receives directly the desired states of the logic ouputs Tout allumer Tout teindre All On All Off 8 7 6 Activer d sactiver des sorties JL JL TL d E II Toggle ON OFF logic outputs Pi ID 1 16 Valeur d cimale quivalente aux 5 8 tats des sorties logiques Sortie MIDI vers Po ii Decimal value coding the states I AtoMIC Pro UE of the 8 logic ouputs Choose MIDI output for AtoMIC
104. ut stays within the ripple range the algorithm will allow the possibility that another peak value is present in the envelope and that it may be its real maximum value If the signal goes beneath the limit specified by the ripple tolerance the NOTE ON message will be generated anyway with a velocity equal to the last maximum value found in the envelope If the envelope has a lot of ripples the ripple tolerance should be set to a high value so as to obtain an efficient detection of the actual envelope peak Section 2 Interface configuration guide rcam documentation Note on message with trigger threshold N ON Tr This message allows a MIDI note with fixed velocity to be generated The switching on and off of the note is controlled by two thresholds the NOTE ON threshold and the NOTE OFF threshold These two thresholds are controlled by the user from another configuration menu see Setting the NOTE ON and NOTE OFF trigger thresholds on page 50 signal NOTE ON message NOTE ON threshold 7 NOTE OFF message NOTE vA ORE a s threshold tNOTE ON t NOTE OFF t The specified thresholds are absolute values this time and the peak value of the envelope is not used either This type of message can be used to simulate the behaviour of MIDI keyboards which are not velocity sensitive The velocity which MIDI uses has to be set by the user see Setting the velocity of note on with trigger threshold m
105. ux field Window Size 128 0 1 256 512 1024 Section 4 Appendices rcam documentation Config2 Bits 7 4 MIDI channel b7 b6 b5 b4 b3 b2 bl bO MIDI Ch field bps sb2 o e bo Bits 3 0 MIDI message Msg field Control by a digital input 0 0 0 0 OFF 0 0 0 1 Bi 0 0 1 0 Bi 0 0 1 Bi Paraml Bitsy 5e b7 b6 b5 b4 b3 b2 b1 bo Bit 6 0 Note Program controller number Val field Alternate Bit 7 O0 Bi B l ee ES all case reae oer o it 6 0 alternate Note Program controller number Alt field 81 Section 4 Appendices rcam documentation Config4a Bits 7 4 Physical output b7 b6 b5 b4 b3 b2 b1 bO selection Out field 7th bit 6th bit 5th bit 4th bit Selected output s 0 0 0 0 XXXXX 0 0 0 1 xxxO 0 0 1 0 xxOx 0 0 1 1 xxOO 0 1 0 0 xOxx 0 1 0 1 xOxO 0 1 1 0 xOOx 0 1 1 1 xOOO 1 0 0 0 Oxxx 1 0 0 1 OxxO 1 0 1 0 OxOx 1 0 1 1 OxOO 1 1 0 0 OOxx 1 1 0 1 OOxO 1 1 1 0 OOOx 1 1 1 1 OOOO NOTE x lt gt non selected output O lt gt selected output 82 Section 4 Appendices rcam documentation Bits 3 2 Lookup table selection
106. ven if a signal does physically enter the device If the field is switched back to ON the input is active and its associated MIDI message will be sent each time the signal connected to that input varies in level NOTE The smaller the number of active inputs the higher the acquisition frequency of the active inputs It is possible to change the value of this field dynamically from the user interface of the device but also from a host system which is compatible with MIDI To do this the host must send System Exclusive MIDI codes onto the MIDI IN connector of the analog MIDI interface Refer to Section 3 Connections using MIDI on page 67 and Section 4 Appendices on page 73 for further details on this type of operation Direction of signal variation var field Var With this field the user may chose how the analog MIDI interface interprets signal variations on the analog inputs This field may be set to one of two values or positive or negative variations If this field is set to the MIDI message value follows the same variations as the signal on the analog input Conversely if the field is set to the MIDI message value will follow the opposite of the analog signal variations 35 Section 2 Interface configuration guide Arcam Example volume control using a mechanical pressure sensor Sensor Mechanical pressure Hypothesis the sensor gives a voltage which is MIDI sound pro
107. which is what they are made for in the first place With the exception of System Exclusive encapsulation defined by the MIDI standard the MIDI dump message contains configuration parameters as they stand in the memory of Ato MIC Pro 76 Section 4 Appendices Dump semicolons indicate comments OxFO Beginning of SysEx 0x00 SysEx ID Ircam 0x20 Ox7F SysEx Function number Current device ID QRS Oe id puse rE a med pon System Exclusive encapsulation Device ID Indicate which device has to receive the dump dump message identifier PatchNamel 8 ASCII caracters PatchName2 to export the name of the patch PatchName3 being dumped PatchName4 PatchNames PatchName6 PatchName7 PatchName8 ADC Vref ADC reference voltage IDI channel Receive MIDI channel Ctrll Logic outputs control Ctrl2 Logic outputs control ler number LSB ler number MSB Digital setup Digital inputs configuration Digital MIDI ch Digital msg value Last sampled value Lt Last sampled value _Ht Filter Filter countert Noisegate Draft LT Configl Config2 Paraml Alternate Draft HT Config4a Config4b ParamMultil ParamMulti2 ParamMulti3 Next analog channel 32 iterations OxF7 End of SysEx Data to be transferred in two nibbles see following page Not useful Set to zero when

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