Sycologic AMI Analog to Midi Interface User Manual
Contents
1. Analog to MIDI Interface User Manual SYCOLOGIC Analog to MIDI Interface User Manual CONTENTS Page 1 Introduction 2 1 1 Pitch Inputs 1 2 Gate Inputs 1 3 Dynamic amp Contro Inputs 1 4 MIDI Note ON Note OFF events 1 5 Operating Panel 3 1 6 Sync Inputs 4 1 7 Changing the MIDI Channel 2 Operating Modes 5 2 1 POLY Mode with Dynamics 2 2 DUAL Mode with Dynamics 6 2 3 MONO Mode with Dynamics 2 4 POLY Mode with Controls 8 2 5 DUAL Mode with Controls 9 2 6 MONO Mode with Controls 10 3 Contro Inputs 11 3 1 Patch Change 3 2 Pitch Bend 3 3 Modulation 3 4 After Touch 12 3 5 DX Parameters 3 5 1 DX Volume 3 5 2 DX Portamento 3 5 3 DX Breath Control 4 Sync Inputs 13 4 1 Clock Input 42 Stert Stop Input 43 Real Time events 5 Calibretion 14 6 MIDI Data Format 15 7 Specifications 16 c 1984 Sycologic July 10 1984 AMI User Manual 1 Introduction The SYCOLOGIC AMI is 6 microprocessor based interface which will convert standard analog Control Voltage 1 volt octeve and Gate signals into digital MIDI signals Using the AMI you can transmit not only NOTE EVENTS with DYNAMICS but elso PATCH CHANGES MODULATION PARAMETERS and even SYNC CODE Thus giving analog keyboards end sequencers new creative abilities with the power to control eng MIDI equipped musical instruments 1 1 PITCH INPUTS There are 8 sockets on the front panel labelled Pitch Inputs Contro Voltage CV signals from an analog source rangi2. CHANGE Any chenge in the level of an analog signal applied to this input will Cause a MIDI PATCH CHANGE event This will occur in semitone 12th of a volt steps thus allowing 61 Patches to be selected Therefore Patch 0 is transmitted with OV input and Patch 60 with 5V input It is suggested that you do not change PATCH et the same time as sending 6 NOTE ON EVENT The receiving instrument will then have its audio chennel open while it is recalling the new patch resulting in unpredictable noises from the output Ov tv 2v 3v 4v Sv ci c2 C3 C4 cs C5 0 12 24 36 48 60 ER FARERI EENEI occ set Patch Number 3 2 PITCH BEND Any change in the level of an analog signal applied to this input will cause a MID PITCH BEND event simulating the effect of moving the Pitch Bend Wheel or controller on the receiving instrument In this case Pitch Bend is always upwards relative to the notes being played The amount of Pitch Bend Upwards will vary from 0 with OV input to 100 with SV input This amount is expressed as a percentage since the overall renge of Pitch Bend will be es set on the receiving MIDI Instrument 3 3 MODULATION Any change in the level of an analog signal applied to this input will cause a MIDI MODULATION Contro Change event simulating the effect of moving the Modulation wheel or controller on the receiving instrument The amount of Modulation will very from 0 with OV input to 100 with SV input This amount is
3. expressed es a percentage since the overall range of modulation will be as set on the receiving MIDI Instrument July 10 1984 AMI User Manual 11 3 4 AFTER TOUCH Any change in the level of en enalog signal epplied to this input will Cause a MIDI AFTER TOUCH or Channel Key Pressure event simulating the effect of pushing down on the receiving instrument s keyboard Obviously instruments connected which are not capable of responding to After Touch will ignore this event The amount of After Touch will very from 08 with OV input to 100 with SV input This amount is expressed es a percentage since the overall range and destination of After Touch control will be as set on the receiving MIDI instrument 3 5 DX PARAMETERS The following control inputs are for use with the YAMAHA DX range of Instruments Note other menufacturer s instruments may recognise these MIDI transmissions but interpret them in different ways 3 5 1 DX VOLUME Any change in the level of an analog signa applied to this input will cause 6 MIDI VOLUME Control Change event simulating the effect of edjusting the overall volume level of the DX Instrument The Volume will vary from Minimum with 0 04V input to Maximum with SV input Note that the AMI will transmit en event with Maximum Volume for OV input This prevents the receiving instrument from being silenced when there is no Control Voltage present 3 5 2 DX PORTAMENTO Any change in the level of e
4. 6 MIDI NOTE OFF event and then retriggered by sending a NOTE ON with the new Pitch end Dynamic levels When the Gate goes low a NOTE OFF event is sent simulating the respective key up on the receiving instrument July 10 1984 AMI User Menual 2 1 5 OPERATING PANEL Above the Dynamic amp Control Inputs is the Operating Penel Four switches allow the various operating modes to be selected and displayed together with a seven segment LED display showing which MIDI channel the AMI is transmitting on When the CONTROL mode is off Dynamic information is added to note events in accordance with the following modes POLY Control of 8 voices polyphonically on 1 MIDI channel DUAL Control of 4 voices polyphonically on each of 2 MIDI channels MONO Control of 1 voice monophonicelly on each of 8 MIDI channels When the CONTROL mode is active and POLY or MONO mode selected the following controls or parameters will be trensmitted for CVs connected to the Dynamic amp Control inputs 1 Common Dynamics for inputs 1 8 2 Patch Change from 1 to 64 petch per semitone 3 Pitch Bend upwards 4 Modulation 5 After touch 6 DX Volume 7 DX Portamento 8 DX Breath control When the CONTROL mode is active and DUAL mode selected the following controls may be transmitted MIDI Channel N 1 Common Dynamics for inputs 1 4 2 Patch Change 3 Pitch Bend upwards 4 Modulation MIDI Channel N 1 5 Comm
5. DI channels July 10 1984 AMI User Manual 2 4 POLY MODE with Controls Pressing CONTROL on the operating panel with both DUAL end MONO off puts the interface into POLY mode with 6 CONTROL Inputs Eight Pitch end Gate inputs cen be converted with the dynamics for all notes determined by the level of Control Input 1 This allows the other Control Inputs to be used to control parameters of the MIDI instruments connected Both note and parameter information will be transmitted on the MIDI channel selected TO OTHER INSTRUMENTS Dual Mono Control Chonnel AE NI eese Pitch CV s Gates MS 1 8 1 8 pitch Bed Patch Chonge Common Dynamics Synth s A B amp C N is the MIDI channel selected from 1 to 8 POLY MODE amp CONTROLS Control of 8 voices polyphonically on 1 MIDI channel July 10 1984 AMI User Manua 8 2 5 DUAL MODE with Controls Pressing CONTROL on the operating panel with DUAL on puts the interface into DUAL mode with 8 CONTROL Inputs Two groups of 4 Pitch end Gete Inputs can be converted with common dynamics for each group This ellows the other 6 Control Inputs to be used to control PATCH CHANGE PITCH BEND end MODULATION on each of the 2 MIDI channels selected Note that in this mode the first MIDI channel is the one selected 1 8 and therefore shown in the display the second channel is the next one up 2 9 MIDI Instruments connected may be set to receive on either chennel T
6. O OTHER INSTRUMENTS Synth B AO Channet N 1 Synth A Channel N i Pitch Bend Patch Chonge Pitch Gates Pitch Gates E Synth Ba CVs 1 4 CVs 5 8 Modulati 1 4 5 8 k lation una Patch Chenge g Synth A Synth B Coirean Dura Synth A N is channel number selected from 1 to 8 DUAL HODE amp CONTROLS Control of 4 voices polyphonically on each of 2 HIDI channels July 10 1984 AMI User Manuel 9 2 6 MONO MODE with Controls Pressing CONTROL on the operating panel with MONO on puts the interface into MONO mode with 8 CONTROL Inputs Eight seperate Pitch end Gate Inputs cen be converted end trensmitted on MIDI channels 1 to 8 with the dynamics for all notes determined by the level of Control Input 1 The other Control Inputs can be used to control parameters of the MIDI Instruments connected Note that all of the Control Inputs ere transmitted on one MIDI channel the one selected end therefore shown on the LED display jJ Synth H E Channel e N Synth B Channel 2 THRU Synth Channel 1 EE mem DX Portomento 73 NN oo DX Volume 295 o After Touch 8 23 S Moddction a a 2 Pitch Bend w wn Patch Change Synth Synth Synth Common Dynamics A B H Chennel N N is the MIDI channel selected from 1 to 8 MONO MODE amp CONTROLS Control of 1 voice monophonically on each of 8 MIDI channels July 10 1984 AMI User Manual 10 3 Control Inputs 3 1 PATCH
7. be flashing having entered the calibrate mode Connect the Analog source which is to be used to Pitch Input 1 and play or enter its lowest C The AMI should respond with amp number corresponding to the C1 played That is amp 1 will be flashing in the display window If no number is present insert a small Flat bladed screwdriver into the Offset trimmer Left hand hole end turn until the correct number is showing The switch LEDs are used to fine tune the input Only the centre LED on MONO means that the input is correct the left hand LED DUAL means the input voltage is low while the right hand LED CONTROL means the input voltage is high Trim until only the centre LED is on Now play C6 The number in the display should be 6 If this is not the case adjust the Volts Octave trimmer Right hand hole until 6 is displayed and only the centre LED ts on Playing all the C s in between should now result in the correct number being displayed for each octave OFFSET 6 VOLTS OCTAVE OCTAVE NUMBER Note Both of the trimmers ere 20 turn with no end stops To exit from calibrate mode press any switch July 10 1984 AMI User Manual 14 6 MIDI Data Format The MIDI events transmitted by the AMI comply with Version 1 0 of the MIDI specificetion end therefore should be recognised by instruments manufactured after August 83 If you are unsure about the MIDI implementation used in your machine contact your dealer or
8. entered Inputs 1 4 ere on MIDI chennel 1 while Inputs 5 8 are on channel 2 This means that en analog source can control 4 voices polyphonically on each of 2 MIDI channels MIDI instruments connected may be set to receive on either channel depending on the effect desired TO OTHER INSTRUMENTS Synth B Channel N 1 Synth A Channel N WW M li PIRE h CV s 4 pates PE rere mH 1 4 8 Dynamite E S Dynamic CV s 5 8 A Synth A Synth B N is channel number selected from 1 to 8 DUAL MODE Control of 4 voices polyphonically on each of 2 MIDI channels July 10 1984 AMI User Manual 6 2 3 MOND MODE with Dynamics Pressing MONO on the operating panel puts the interface into MONO mode with individual control of dynamics for each input This allows 8 separate Pitch Dynamic and Gate Inputs to be converted end transmitted on MIDI channels 1 to 8 Note Changing the MIDI channel is this mode has no effect An analog source cen now control 1 voice monophonically on each of 8 MIDI channels Up to 8 instruments could be controlled individually each placed on e different MIDI channel If a receiving MIDI instrument is Multi timbral cen play several voices each with a different sound such as SCI s SIXTRAK then putting it into MONO mode will allow the AMI to control each voice Synth H Channel 8 Synth A Synth B Synth H MONO MODE Control of 1 voice monophonically on each of 6 MI
9. ing Modes 2 1 POLY MODE with Dynamics With no switch LED s on the interface is in POLY mode with individual contro of dynamics for each input Default on power up In this mode all 6 Pitch Dynamic end Gate Inputs are converted to MIDI date and transmitted on the channel shown on the LED display This means that an analog source can have control of 8 voices polyphonically on 1 MIDI channel All MIDI instruments connected and receiving on this channe will play the same notes polyphonically according to their internal keyboard algorithms Instruments connected which do not have the ability to express dynamics will ignore the dynamic information sent by the AMI TO OTHER INSTRUMENTS Synth C Channel N THRU N Synth B Channel N THRU Synth A NT chennet N Dual Mono Control Chonnel wr m Pitch CV s Dynamic CV s Gates 1 8 1 8 1 6 Synth s AB amp C Nis the MIDI channel selected from 1 to 8 POLY MODE Control of 8 voices polyphonically on 1 MIDI channel July 10 1984 AMI User Manual 5 2 2 DUAL MODE with Dynamics Pressing DUAL on the operating panel puts the interface into DUAL mode with individual control of dynamics for each input In this mode 2 sets of 4 Pitch Dynamic and Gate Inputs ere converted end trensmitted Inputs 1 4 ere sent on the MIDI channel selected 1 8 while Inputs 5 8 are sent on the next MIDI channel up 2 9 For example when the AMI hes just been switched on and DUAL mode
10. local Service Centre A more detailed description of the AMI s MIDI Format follows NOTE ON 1001nnnn n is MIDI channel 0 to Okkkkkkk key number 24 to 84 Ovevvvvv velocity 1 to 127 NOTE OFF 1000nnnn Okkkkkkk key number 24 to 84 Ovvvvvyy velocity 0 PROGRAM CHANGE 1100nnnn Oppppppp program number 0 to 63 PITCH BEND 1110nnnn Ovvvvvvv LSB value 64 Ovvvvvuv MSB value 0 to 63 AFTER TOUCH 1101nnnn Ovvvvvvv value 0 to 127 MODULATION 101 Innnn 00000001 Ovyyyvey value 0 to 127 DX VOLUME 1011nnnn 00000111 OvvyyyyY value 0 t0 127 DX PORTAMENTO 101 1nnnn 00000101 OvyyvevY value 0 to 12 DX BREATH CONTROLLER 101 1nnnn 00000010 Ovvvvevv value 0 to 127 SYNC START 11111010 CLOCK 11111000 STOP 11111100 July 10 1984 AMI User Manual 15 7 Specifications INPUTS PITCH CV s DYNAMIC amp CONTROL CV s GATE s SYNC CLOCK START STOP OUTPUT MIDI POWER SUPPLY POWER CONSUMPTION DIMENSIONS ACCESSORIES SUPPLIED Sycologic reserve the right to change this s July 10 1984 AMI User Manual 0 5V 0 5V OV off 5 15V on 3 15V e 24 48 or 96 ppqn OV stop 5 15V start 3 125 KBaud serial trensfer 1 start bit 8 data Istop bit 240V AC e 50H2 10w 482 x 88 x 198 mm WxHxD Mains lead with IEC plug 5 pin DIN to 5 pin DIN lead User Menual pecification without notice 16
11. ment When this input is at OV or low the Clock input will be disconnected Or gated When in the range of 5 15V or high the Clock is connected If no Start Stop signal is present the Clock input is connected This is the case with Drum Machines such as LINN E MU end OBERHEIM which have no Start Stop output 4 3 REAL TIME EVENTS When the Clock is first detected a MIDI START event is transmitted immediately followed by a MIDI CLOCK event MIDI CLOCK events are then transmitted at 24 ppqn If there is a gap of more than 0 5 secs between pulses the interface will presume that the Clock signal has stopped and will transmit a MIDI STOP event These Real Time events have the highest priority in the AMI and will be transmitted at any time regardless of the Mode selected and the inputs connected July 10 1984 AMI User Manual 13 5 Calibration The AMI has two calibration trimmers which may be eccessed through holes in the front penel Positive Offsets in the Control Voltege source may be trimmed out using the trimmer on the left while Yolts Octave may be adjusted using the trimmer on the right The unit is supplied calibrated at 1 Volt Octave with no voltage offsets that is C1 equals Ov Before any attempt is made to re calibrate the interface allow the unit to warm up for at least 30 minutes then power off Hold down any switch on the operating panel and power up When the switch is released the display will
12. n analog signal epplied to this input will cause a MIDI PORTAMENTO Control Chenge event simulating the effect of changing the amount of Portamento on the receiving instrument This emount will very from fast or minimum with OV input to slow or maximum with 5Y input 3 5 3 DX BREATH CONTROL Any change in the level of an analog signal applied to this input will cause 6 MIDI BREATH CONTROL Control Change event simulating the effect of blowing into the receiving instruments Breath Controller The amount will vary from 0 with OV input to 100 with SV input This amount is expressed as e percentage since the overall renge end essignment of Breath Control will be as set on the receiving instrument July 10 1984 AMI User Manual 12 4 Sync Inputs Sync signals can be applied to the two inputs on the back panel Clock and Start Stop 4 1 CLOCK INPUT The Clock signal can range from 3V to 15V in level and cen be 24 48 or 96 pulses per quarter note ppqn The rate is divided internally to the 24 ppqn MIDI rate To set the clock divisor hold down CHANNEL and press DUAL to cycle through the 3 rates indicated by the LED in each switch The set rate cen be checked at any time by simply holding CHANNEL On power up the unit defeults to 24 ppqn 24 48 96 42 START STOP INPUT The Start Stop input is only required for equipment having a Clock output which runs all the time such as that found on ROLAND equip
13. ng between O end 5 volts may be connected to any input circuitry is included to protect the AMI should eny input exceed this range The unit is calibrated at 1 volt octave thus allowing control over e 5 octave range The lowest note is C1 with OV input and the highest C6 with 5Y input 1 2 GATE INPUTS A group of 8 sockets below the Pitch Inputs ere labelled Gote Inputs Gote or Trigger signels from the analog source should be connected to the inputs corresponding to those used for Pitch Gate signals should be active high ranging between 5 end 15 volts When a Gate goes high or ON the CV at the Pitch Input above it will be read 1 3 DYNAMIC amp CONTROL INPUTS To the right of the Pitch end Gate Inputs are enother 8 sockets which ere labelled Dynamic amp Control Inputs These inputs ere similar to the Pitch Inputs as they allow CV s from 0 to 5 volts to be connected However these can be used to contro the Dynamics of each note event patch changes end modulation peremeters 1 4 MIDI NOTE ON NOTE OFF EVENTS When eny of the 8 Getes go high their Pitch end Dynamic inputs ere converted into digita form and sent es e MIDI NOTE ON event simulating amp key down on the receiving instrument Note If there is no Dynamic input a default value of half full renge is trensmitted While the Gate is high the Pitch input will be constantly read If its leve changes the old note will be switched off by transmitting
14. on Dynamics for inputs 5 8 6 Patch Change 7 Pitch Bend upwards 8 Modulation Where N is the channel number selected from 1 to 8 July 10 1984 AMI User Manual 1 6 SYNC INPUTS On the rear panel ere two inputs labelled START STOP and CLOCK which can be used to convert sync signals from sequencers or drum machines into MIDI SYNC signals Clock outputs of 24 48 and 96 beats per qtr note may be connected to the CLOCK input interns division being provided to produce a MIDI clock The START STOP input is provided for use with ROLAND equipment When the first clock pulse is seen the AMI produces amp MIDI START signal end then a MIDI CLOCK on every beat If their is a gap of more than 0 5 seconds between clocks the interface will time out end generate a MIDI STOP signal thus assuming that the sending instrument has stopped 1 CHANGING THE MIDI CHANNEL When the interface is first switched on ell of the LED s will be lit After about a second all the switch LED s will go out end the number t will be shown in the display This is the default setting showing that the AMI will be transmitting eny date on MIDI channel 1 To receive this data your MIDI instrument should be set to the same channel The interface can sit on any one of 8 MIDI channels To change the channe number hold CHANNEL end press CONTROL to increment or MONO to decrement July 10 1984 AMI User Manua 2 Operat
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