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oberheim gm1000 ownersmanual

1. 1255 OBERHEIM GM 1000 Digital Signal Processor Early Reflections Eq Lo Shelve parameters Frequency Range 50 70 100 140 200 280 400 Hz Boost Cut Range 14db 14dB Early Reflections Eq Mid Peak parameters Frequency Range 100 140 200 280 400 560 800 1 0 1k4 2k0 2k8 4 0 5k6 8k0 Hz Bandwidth Q Range 0 5 1 2 3 Boost Cut Range 14db 14dB Early Reflections Eq Hi Shelve parameters Frequency range 1k5 2k1 3k0 4k2 6k0 8k5 12k Hz Boost Cut Range 14db 14dB For this section refer to the explanations supplied in the section on the parametric equalizer These controls act on equalization of the early reflections 001 BRoarin Gtr FE GATE REVERE ACCENT S POELGY amp me DIR LO SHELVE 50 MHIO 100 0 os HISHELVE 126 F GE Accent Level parameter Range 0 100 Regulates the volume level of a single repetition of the signal with the end of the early reflections pattern as time reference Accent Delay parameter Range 0 200 ms Regulates the delay of the repetition known as Accent see above on both channels Direct Eq Lo Shelve parameters Frequency Range 50 70 100 140 200 280 400 Hz Boost Cut Range 14db 14dB Direct Eq Mid Peak parameters Frequency Range 100 140 200 280 400 560 800 1ko 1k4 2k0 2k8 4k
2. page 132 6 10 Noise gate NG me T RS EIN page 140 6 11 The Midi Foot Controller page 140 79 OBERHEIM GM 1000 Digital Signal Processor 7 Utility Mode MEE page 142 Tae Program Labeo ces ie ed atta page 144 Jed DUROS tere arene Ma M rA AR A Lt Or nna ne page 144 T A Midi MOBIGOFD pe pr tarea rather beate page 145 8 Tools Bb 146 2 A alyz f 147 9 Tips and Tricks 9 1 Level and digital technology a page 150 9 2 Programming 3o ioci etica i eot te nU qo Eo uma Eee xta daa page 151 9 3 Writing the paleliaso page 151 10 Initialization procedure Factory SOS cuneo nist tae alin db sen ben enden page 153 10 2 Dsp Self testaa page 153 11 Annex 11 1 The types of connectos page 154 11 2 Glossary of terms USO sii cass ade accede eels ate page 154 12 Technical specifications page 155 80 OBERHEIM GM 1000 Digital Signal Processor 1 INTRODUCTION 1 1 PRECAUTIONS The following is a list of a number of simple precautions to be adopted when using and maintaini
3. k MODE 4 hDIFECT GWw ss a n MASTER ee 100 Key Note parameter Range C C D D E F F G G A A B Selects the note to be edited in editing page 2 for creation of the shifting Mode parameter Range 1 4 This parameter sets the length of the Shifting Direct parameter Range 0 100 Regulates the level of the direct signal 121 OBERHEIM GM 1000 Digital Signal Processor Effect parameter Range 0 100 Regulates the level of the shifting line Master parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain A 001 Roarin Gtr SP2 CUSTOM PSHIFT The second editing page is entirely dedicated to the table where the note played is combined with the note created by the Shifted in order to obtain the desired effect 4 VOICE CHORUS This is a further version of the Chorus featuring no less than 4 stereophonic lines voices to give the effect the maximum roominess and depth Voice parameter Range 1 4 Selects which of the 4 lines is to be modified Rate parameter Range 0 100 Regulates the modulation speed of the selected voice Pre Delay parameter Range 0 100 This parameter sets the effect delay time of the selected voice Depth parameter Range 0 100 This parameter regulates the modulation depth for each voice selected Level parameter Range 0 100 Regulates the level of the s
4. Oberhem 24BIT DIGITAL SIGNAT PROCESSOR AQ _B arim 6tr EG 5 BANDS GRAPHIC varrr k 0 Hz LEVEL 85 GROUPS TOOLS k miBHr Q k MODE ST A O4E 2 4B dE SE Headphones Audio connections e use only good quality screened cables e make the audio connections first and then the mains connection 84 OBERHEIM GM 1000 Digital Signal Processor 3 2 SOME ADVICE ABOUT CORRECT USE OF THE GM 1000 Switch on Before making all the connections make sure that the amplification system volume is turned down to the minimum setting Switch on the GM 1000 and then adjust the system volume again Otherwise always switch on the GM 1000 first and then the amplification system Input level Each instrument has its own output level which may vary depending on circumstances In order to obtain the best performance from the GM 1000 the input level must be adjusted to suit the instrument connected This simple procedure will ensure that the right amount of signal is sent to the effects processor in order to avoid distortion if the signal is too strong or hissing if the signal is too weak Start the operation by turning the input trimmers to zero and send a signal to the GM 1000 Start to turn the Input trimmers clockwise until the signal illuminates the Input Level LED meter the optimum operating range is between 12 dB and 3 dB Output level The MASTER LEVEL
5. 10 1 FACTORY SETTINGS To access the GM 1000 multieffects unit initialization procedure switch on the device keeping the EDIT and ENTER WRITE keys simultaneously The service video page will offer the following functions CLEAR WORK VARIABLES to be used only if the system becomes blocked PANIC The basic values of a number of parameters of the control software will be restored if the contents of the memory have been contaminated due to errors of any kind This operation does not modify the contents of the data saved by the user in the patches BANK TO CLEAR causes the total loss of the contents of the patches memorized in the selected bank Restores the original conditions of the memory contents recovering the 128 patches programmed in the factory and recopying them into one or more of the 3 banks selected with Y CAUTION Only use if the machine cannot be restored to correct operation in any other way 10 2 DSP SELF TEST The page described in the previous point contains a Self Test or self diagnostics page This page shows the result of a self test performed by the GM 1000 on the operation of its own digital signal processors responsible for generating the effects e CAUTION this section of the control software should only be used by the staff of authorized Oberheim service centres 153 1000 Digital Signal Processor 11 11 1 THE TYPES OF CONNECTORS USED HOT GND
6. OBERHEIM GM 1000 Digital Signal Processor 3 115 Simulation of a combo amplifier equipped with one 15 inch speaker with bass reflex system Influence parameter Range 0 100 Parameter which sets the incidence of the BOX TYPE parameter in the context of the amp simulator Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain 6 5 MODULATION MOD CHORUS The Chorus effect is obtained by subdividing the signal into two lines one remains unchanged while the tuning of the other is modified slightly in a cyclical way modulation The two lines are then mixed and the resulting sound has more body is richer and seems roomier than the original Roarinctr Hoo CHORUS k TYPE DOLIELE k DEFTH k FFE DELA Y me b EFFECT id k DIRECT 1on H HASTER 1on Type parameter Range Stereo Mono Double The parameter which selects the type of Chorus Rate parameter Range 0 100 Sets the modulation frequency Depth parameter Range 0 100 This parameter regulates the depth of the modulation Pre Delay parameter Range 0 100 msec This parameter sets the modulation delay time Effect Level parameter Range 0 100 Regulates the level of the effect i e of the modulated line Direct Level parameter Range 0 100 109 OBERHEIM GM 1000 Digital Signal Processor This parameter regulates the level of the direct signal Master
7. OBERHEIM GM 1000 Digital Signal Processor Regulates the level of the output signal in the context of the effects chain STEREO PARAMETRIC This is a parametric equalizer meaning an equalizer in which the user is able to modify the operating frequencies band widths and intervention levels as he pleases This allows perfect selection of one or more frequencies to be enhanced or attenuated Au Roaoarin Gtr EG STEREO PARA LO LIT OFF LOSHELVE EGO Hz b Enc Ode kR F 3E Hz Eic Ode k LEVEL b LEVEL a www 3E RHODE ZT Low cut frequency filter OFF 35 50 70 100 140 200 This filter is used to eliminate the lowest frequencies Low Shelve filter Freq Range 50 70 100 140 200 280 400 Hz Enhancement Attenuation Range 14dB 14dB This filter of shelving type enhances or attenuates the low frequencies The parameters which can be modified are the working frequency and the trigger level High Shelve filter Freq Range 1k5 2k1 3k0 4k2 6k0 8k5 12k Hz Enhancement Attenuation Range 14dB 14dB This filter of shelving type enhances or attenuates the high frequencies The parameters which can be modified are the working frequency and the trigger level Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain Mode parameter Range Stereo Dual This parameter establishes whether the two sections Left and Right
8. Oberheim amp GM 1000 24 BITIM Ce UVY PIJ COLE 598 9600624 OPERATING MANUAL Viscount FI RW IS RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING TO REDUCE THE DANGER OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL This simbol is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance This simbol is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclouser that may be of sufficient magnitude to constitute a risk of electronic shock to persons INSTRUCTIONS PERTAINING TO A RISK OF FIRE ELECTRIC SHOCK OR INJURY TO PERSONS IMPORTANT SAFETY INSTRUCTIONS WARNING when using electric products basic precautions should always be fallowed including the following 1 Read all instructions before using the product 2 To reduce risk of injury close supervision is necessary when product is used near children 3 Do note this product near water for example near a batnub washbowl kitchen sink in a wet basement or near a swimming pool or the like 4 This product either alone or in combination with an amplifier and headphones or speakers may be capable of producing sound levels that could cause permanent hearing l
9. Pan parameter Range L 0 100 R 100 0 Determines the distribution of the selected line within the stereo front Level parameter Range 0 100 Sets the output level of the selected line Hi Damp parameter Range None 20K 19K 18K 17K 16K 14K5 12K5 11K5 10K 9K 8K 6K35 5K05 2K 1K Displays the cut off frequency of a filter which eliminates from the taps all the frequencies higher than the one set Direct parameter Range 0 100 Regulates the level of the unprocessed signal Master parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain Control of the HOLD pedal The mechanism has already been explained but in this case only one of the 4 delay lines the longest i e number 1 is switched to Hold mode METRONOMIC DELAY 1 The main feature of this delay module is that the delay times can be entered in musical notation rather than in milliseconds with a value expressed in B P M beats per minute as reference Structurally the delay line has been subdivided into 3 parts 129 OBERHEIM GM 1000 Digital Signal Processor Au RBoarin Gtr OLY METRONOME 1 120 VALUE Firs LE VEL Figg Figg Figg 25 k HIDAMF lzkE kDIRECT wawww 100 k HIAZTER Was 100 BPM parameter Range 30 250 BPM indicates the number of beats per minute in our case they are assumed always
10. OBERHEIM GM 1000 Digital Signal Processor STEP PHASER The Step Phaser carries out a modulation on the basis of a Sample and Hold Au Raoarin itr HOD STEP PHASER k a0 k STEF 5g d um k DEFTH EE F HANJAL z b EMPHASIS E k LEVEL a ws Rate parameter Range 0 100 Sets the modulation frequency Step parameter Range 0 100 Establishes the relationship between the modulator and the sampling In other words it sets the waveform which will modulate the input signal Depth parameter Range 0 100 This parameter regulates the depth of the modulation Manual parameter Range 0 100 This parameter sets the modulation delay Emphasis parameter Range 0 100 The parameter governs the amount of feedback to be returned to the effect input Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain TREMOLO This effect produces a periodic variation of volume at regular intervals with adjustment of the modulation speed and intensity Raoarin itr Hoo TREMOLO k THRESHOLD 22 TIME RELEASE TIME WEF ORM k LEVEL a ws s Threshold parameter Range 0 100 Sets the level of the input signal above which the effect is activated 112 OBERHEIM GM 1000 Digital Signal Processor Attack Time parameter Range 0 100 Sets the amount of time which will pa
11. Sound txfer X X X X O O O O O O O O O O 370 O O O X X X X X X X X X X O O O X gt Mode 1 Omni On Poly Mode 2 Omni On Mono O YES Mode 3 Poly Mode 4 Omni Off Mono X NO 157 LITHIUM BATTERY WARNING CAUTION This product contains a lithium battery There is danger of explosion if battery is incorretly replaced Replace only with a Maxell CR2 32 Replace only with the correct polarity Discard used battery according to manufacturers instruction s ADVARSEL Lithiumbatteri Eksplosjonsfare Vade utskifting benyttes kun batteri som anbefalt av apparatfabrikanten Brukt batteri returneres apparatleverand ren ADVARSEL Lithiumbatteri Eksplosjonsfare ved fejlagtig h ndtering Udskiftning m kun ske med batteri av samme fabrikat og type Lev r det brugte batteri tilbage til leverand ren VAROITUS Paristo voi r f ht jos se on virheellisesti asennettu Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppin H vit k ytetty paristovalmistajan ohjeiden mukaisesti WARNING Explosionsfar vid felaktigt batteribyte Anv nd samma batterityp eller ekvivalent typ som rekommendars av apparatillverkaren Kassera anv nt batteri enligt fabrikantens instructions The information contained in this manual is subject to change at any time without notification Some information contained in this manual may also be inaccurate due to undocumented changes in the product or oper
12. which will be completely out of use Compare This key has two functions e in the main video page in this case pressing the COMPARE key activates the EDIT page for the group levels already described in the PLAY MODE section This function is underlined by the word LEVELS on the display against the COMPARE key Press EXIT to return to the main video page in the edit pages it activates the sound compare function In other words it allows the user to make a comparison by alternating the sound modified in an EDIT session current situation with the sound memorized in a patch taken as the starting point for the modification process It is used to check the worth of the new settings before saving them and replacing the original patch with the modified one While the comparing procedure is in progress the display will show COMPARING COMPARE TO QUIT Press COMPARE again to exit from the function e CAUTION an 3 to the right of play mode on the main menu page indicates that the GM 1000 patch has been modified modifications made become operational immediately but will not become permanent until a memorization procedure described in point 5 3 MEMORIZING A PATCH of this same section has been carried out Otherwise they will be lost when a different memory location is selected 5 2 MASTER LEVEL When programming is complete users are advised to adjust the MASTER LEVEL general volume parameter as appropriate to the
13. 9 TIPS AND TRICKS This section of the manual contains some Tips and Tricks to help you use GM 1000 Multi effects unit to the best of its capabilities 9 1 Levels and digital technology The GM 1000 is a totally digital unit this characteristic means being aware of certain particulars during the programming With a difference to analog technology digital technology does not recognize compromises as far as the flexibility of the audio signal is concerned In a digital system the maximum dynamic level is O dB above this threshold even if exceeded for an istant the so called digital distortion sets in Digital distortion is not to be confused with the that normally requested by guitarists and produces an unpleasant effect that is almost identified as an abnormality in the working of the unit As each filter in the GM 1000 can intervene within a range of 14 dB and its possible to superimpose the effect of more than on filter at a time it can happen that the threshold of 0 dB is exceeded For this reason it is necessary that all the programming of any effects is carried out bearing in mind the gain in amplification that the effect produces In order to realize what percentage of gain is introduced by a selected effect you are advised to use the LOCAL BYPASS function under the display extensively comparing the difference in the levels with and without the effect It is advisable to set the master level of each effect so that the tot
14. MAIN EDIT PAGE 20 EDIT GROUP EDIT PAGE 029 EDIT 1 EFFECT EDIT PAGE EDIT 2 EFFECT EDIT PAGE IF ANY The small rectangle on the display immediately above the EDIT key will show whether or not the EDIT function is available at that moment on every video page e rectangle solid function available 91 OBERHEIM GM 1000 Digital Signal Processor e rectangle empty function not available Once the effect has been selected if it has more than one EDIT page the word PAGE above the rectangle will indicate that the parameters which can be modified are spread over more than one page The EXIT key works in exactly the opposite way to the EDIT key it allows the user to move one page back from the one shown on the display passing through the hierarchical structure in the opposite direction to that explained for the EDIT key EFFECT EDIT PAGE 71 EXIT GROUP EDIT PAGE 2 EXIT MAIN EDIT PAGE mud EXIT MAIN MENU PAGE Enter Write key This key activates the patch writing function WRITE MODE described later in point 5 3 MEMORIZING A PATCH There are also cases when this key assumes different functions These will be displayed in line with the key itself on the LCD Bypass key function keys The BYPASS key amongst the function keys also provides several functions but in this case the procedure obtained depends on the video page on the screen e main video page th
15. The two diagrams which follow show two examples intended to make the use of these controls simpler The first example refers to simulation of use of microphones while the second simulates listening by a human being In the examples the Orientation value is positive while the Spread is negative In case of simulation of use of microphones lt Shooting Orientation In case of simulation of listening by a human being 138 OBERHEIM GM 1000 Digital Signal Processor 001 Boarin 5tr BE VIET CHAMBER CHAMEER PALL SOUTH k HI k LIZTEHEF EARS POR SLE a ri Chamber Wall parameter Range North South East West Ceiling Floor This parameter selects the wall or floor or ceiling of which the absorption is to be regulated using the ABSORPTION parameter Chamber Absorption parameter Range 0 10 Regulates the quantity of absorption of the wall chosen using the WALL parameter The kind of materials of which the room is constructed have considerable influence on the duration of the reverb This parameter sets out to simulate the consistency of various materials which will then give different reverb durations Chamber Hi Damp parameter Range None 20K 19K 18K 17K 16K 14K5 12K5 11K5 10K 9K 8K 6K35 5K05 4K 2K 1K Displays the cut off frequency of a filter which eliminates all the frequencies higher than the one set from the reverb effect Listene
16. a stereophonic delay meaning that it has two separate delay lines for the Left and Right channels This allows a stereophonic panorama to be maintained even for the delayed signal Each line has 4 separate taps which can be programmed separately The parameters relating to the two lines Left and Right are absolutely identical and so they will be described together The edit page selected using the STEREO DLY icon will appear as follows 001 Roarin Gtr OLY DELAY kTAFL if0m gt SOR EO 30 SOR EO LEVEL 30 kF EACKEEEN 25 E k HIDAHF lzkE kDIRECT 1 oo FOSTER Tap parameter Range L1 L4 R1 R4 Allows the user to select the tap to be modified Time parameter Range 0 1000 msec 127 OBERHEIM GM 1000 Digital Signal Processor Allows the user to modify the delay time for each of the 4 taps Pan parameter Range L 0 100 R 100 0 Determines the distribution of the selected tap within the stereo front Level parameter Range 0 100 Allows the user to set the output level of the selected tap Feedback parameter Range 0 100 Regulates the quantity of signal returned to the delay line input and thus the time before the repetitions cease X Feedback parameter Range 0 100 This is the cross feedback between the two channels left and right This parameter is very useful
17. and below the Value Encoder are called CURSOR keys They allow the user to move the cursor used to select a parameter to be modified around the display The top key moves the cursor upwards the key on the right moves the cursor to the right and so on Value Once the parameter to be modified has been selected the Value Encoder allows the user to vary its value Turn the knob clockwise to increase the selected value or anti clockwise to decrease The encoder works dynamically in other words the speed at which it is turned establishes the speed at which the selected value is varied General bypass To listen to the signal exactly as it reaches the INPUT socket the user can completely bypass the algorithms which process the signal by pressing the BYPASS key To confirm this operation the light in the BYPASS key will illuminate Press the BYPASS key again to return to the initial conditions This type of bypass is referred to as a GENERAL BYPASS to distinguish it from the LOCAL BYPASS to be described in the EDIT MODE section Phones output This socket allows the user to listen to the results of the GM 1000 signal processing on headphones Once the jack has been connected to the PHONES OUTPUT socket on the left of the panel optimize the playback volume as preferred using the PHONES LEVEL trimmer immediately above the PHONES OUTPUT socket e CAUTION Excessively high playing volumes may seriously damage your hearing keep the volume
18. as soon as the signal drops back below the threshold With De env when the signal moves from below to above the threshold the volume will be raised lowered Threshold parameter Range 0 100 Sets the signal intervention threshold above which the effect is activated Time parameter Range 0 100 118 OBERHEIM GM 1000 Digital Signal Processor Regulates the effect opening time in a range which is diversified depending on the operating mode SLIDER DE ENV Hold parameter Range 0 100 only present DE ENV mode In DE ENV mode it sets the time for which any transitions around the threshold will not be considered Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain 6 7 SPECIAL EFFECTS 2 SP2 SHIFTING DELAY The Pitch Shifter adds a line which can be freely tuned by the user to the original signal This effect is a two line version of the Pitch Shifter available in two versions both with Pre Delay and Feedback a first version is stereophonic while the second mono version allows greater Pre Delay Ai Roarin Gtr 5 2 OLY ARFEGGIATOFR Waw u 100 hEFFECT Waw s i War i Type parameter Range STEREO ARPEGGIATOR Sets the operating mode of the Shifting Delay Direct parameter Range 0 100 This parameter regulates the level of the direct signal Effect parameter Ra
19. be adjusted to suit the angle from 85 OBERHEIM GM 1000 Digital Signal Processor which the operator looks at it A trimmer marked CONTRAST on the left of the panel is provided for this purpose 3 3 STRUCTURE OF THE GM 1000 Memory configuration The memory of the GM 1000 is divided into four banks A B C and D Each of them contains 128 memory locations which from now on we will call patches giving a total of 512 They are all at the disposal of the user who can program them as preferred The original factory programming settings for the 128 patches in bank A are maintained permanently in a separate memory and can be recalled at any moment using a special procedure described in point 8 1 FACTORY SETTINGS Groups and effects The GM 1000 is designed to process the signal with up to 9 EFFECTS which can be programmed at any one time In addition there is also a constantly active programmable Noise Gate NG The effects are obtained by means of more than forty algorithms and are arranged into categories or GROUPS Each group is able to contain up to 6 different effects of the user s choice and only one of them can be made active There are 9 groups available and this gives the maximum number of effects which can be used simultaneously plus the noise gate which is always active COMPRESSOR CMP Compressor Limiter Expander DeEsser Ducker Frequency Selective Expander Gate Dynamic Processor e DISTORTER
20. control signal to be modified in 6 different ways 4001 RBoarin Gstr CHP DYHA PROC k MODE EC EXFAPHMDEF k RATIO DATE k THRESHOLD k LEVEL Mode parameter Range Dynamic Loudness Spectral Compressor Spectral DeEsser Spectral Exp Gate Eq Compressor Eq Expander Controls the mode in which the effect works The functions provided by the modes vary quite widely e Dynamic Loudness adds the frequencies selected to the crossover depending on the total level of the input signal e Spectral Compressor compresses the frequencies selected in the crossover with attenuation recovery e Spectral DeEsser compresses the frequencies selected in the crossover without attenuation recovery e Spectral Exp Gate expands the frequencies selected in the crossover Eq Compressor combines the equalizer and the compressor Eq Expander the combination of the equalizer and the expander gate Ratio parameter Range 1 1 1 2 1 1 5 1 2 1 3 1 5 1 10 1 20 1 00 1 or 1 1 1 1 5 1 2 1 2 5 1 3 1 3 5 1 4 Gate depending on the Mode selected Sets the compression expansion ratio Threshold parameter Range 0 45 Regulates the value of the level of the input signal above below which the compression expansion effect is activated Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain 100 OBERHEIM GM 1000 Digital Signal Pro
21. for the creation of a number of unusual effects Hi Damp parameter Range None 20K 19K 18K 17K 16K 14K5 12K5 11K5 10K 9K 8K 6K35 5K05 4K 2K 1K Displays the cut off frequency of a filter which eliminates all the frequencies higher than the one set Direct parameter Range 0 100 Regulates the level of the unprocessed signal Master parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain Control of the HOLD pedal The mechanism has already been explained with regard to the Standard Delay MULTI DELAY In this effect the delay line has been subdivided into 4 parts thus creating 4 absolutely independent delays which operate in parallel each with its own parameters AQ Roacin Gtr OL MULTI DEL ROLY 1 k TIME foams kFEAck NEN L EO RLEVEL NENNEN k HIDAMF k IFE T a ww k asa ac DLY parameter Range 1 4 128 OBERHEIM GM 1000 Digital Signal Processor Identifies which of the 4 delay lines is to be modified Time parameter Range 0 800 600 400 200 msec Regulates the delay time of the delay line being modified The maximum value depends on the delay selected 800 msec for the first 600 for the second 400 for the third and 200 for the fourth F Back parameter Range 0 100 Regulates the quantity of signal returned to the input of the delay line selected and thus the time before the repetitions cease
22. group In addition to a brief description of the characteristics of the effect itself all the parameters relating to its programming will be discussed All the procedures described start from the main edit video page To access the various programming pages use the EDIT key while the CURSOR keys and the VALUE encoder will always be used to modify parameters USEFUL HINT When programming always take care to make proper use of the BYPASS and COMPARE keys previously described in the EDIT MODE section As stated in the introductory notes only one effect can be selected from each group The effect selected from the group can always be identified because it is the only one which flashes in the group edit page To change the selected effect locate the cursor on the name of the effect you require using the CURSOR keys and then press the EDIT key We have emphasized this procedure because the fact that another effect is highlighted by the cursor might mislead you unless this operation is confirmed by pressing the EDIT key which will bring you to the effect edit page and which also confirms that the desired effect has been selected But now let s move on to examine the effects the GM 1000 is able to provide 6 1 COMPRESSOR CMP COMPRESSOR The compressor is an effect which reduces the dynamic range of the original signal Therefore if an activation point threshold is set for the compressor the dynamics of all the signal below this thresh
23. in the context of the effects chain Aun Roarin Gtr CHP DE S ER DUCK R ATTACK BASS ETOH MIDDLE TREBLE SO0Hz lkEHz Attack parameter Range 0 100 Sets the time for which the compressor acts on the signal attack Bass parameter Range 0 100 Regulates the low section of the crossover B to M parameter Range 63 80 100 125 160 200 250 320 400 500 635 800 1k 1k25 1k6 2k 2k5 3k2 4k 5k 6k4 8k 10k 12k8 16k Hz This parameter controls the crossover cut off frequency on the medium low frequencies Middle parameter Range 0 100 Regulates the central band of the crossover M to T parameter Range 63 80 100 125 160 200 250 320 400 500 635 800 1k 1k25 1k6 2k 2k5 3k2 4k 5k 6k4 8k 10k 12k8 16k Hz This parameter controls the crossover cut off frequency on the medium high frequencies 98 OBERHEIM GM 1000 Digital Signal Processor Treble parameter Range 0 100 Regulates the high band of the crossover FREQUENCY SELECTIVE EXPANDER GATE This is an expander which allows the filtration of the control signal The operating principle is the opposite of that explained in the section describing the Ducker effect In view of the high maximum expansion ratio 1 4 1 2 it can also operate as a gate Au Roarin Gtr CHP F EXP GATE k MODE EXTERMAL KEY k RATIO GATE k THRESHOLD iwaw 2 k LEVEL Mode parameter Range Freq Selective Exp G
24. out a complex session with substantial modification of the processing parameters for which the EDIT MODE is required The Group levels Press the COMPARE key with the main video page on the screen to access the video page which allows the levels of each individual group to be adjusted These parameters regulate the way in which the active groups affect the signal to be processed The active groups are those which have been included in the processing chain during the programming phase and are not in OFF or LOCAL BYPASS status the LOCAL BYPASS status is different from the GENERAL BYPASS already discussed and will be described in the EDIT MODE section e N B the level of a group in local bypass or OFF status can be modified but this will have no effect on the signal 89 OBERHEIM GM 1000 Digital Signal Processor The parameter modified consists of the effect send level EFFECT LEVEL see section 6 EFFECTS for further information and allows the user to set the influence of the specific group within the processing chain with values between 0 and 100 The only exception is the DST group which does not include parameters for which there is differentiation between the level of the direct signal and that of the processed signal in this case the parameter controlled the only one with values between 0 and 64 will be the DRIVE distortion intensity value which is certainly the most significant parameter in the group concerned To
25. parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain in this case the sum of the processed sound and the direct sound mixed by means of the EFFECT LEVEL and DIRECT LEVEL parameters FLANGER The Flanger effect is basically the same as the Chorus but a feedback of the signal to the input is added The effect obtained is often compared to the sound emitted by a jet during take off Au Raoarin Gtr HOD FLANGER kTYFE OOUBLE 44 kDEFTH k RESONANCE 4 kHAMLAL 2 k DIRECT i 7a k HAZTE a 3E Type parameter Range STEREO MONO DOUBLE The parameter which selects the type of Flanger Rate parameter Range 0 100 Sets the modulation frequency Depth parameter Range 0 100 This parameter regulates the depth of the modulation Resonance parameter Range 100 100 This is the parameter which actually differentiates the Chorus effect from the Flanger it regulates the amount of feedback returned to the effect input Manual parameter Range 0 100 This parameter sets the modulation delay time Direct Level parameter Range 0 100 This parameter regulate the level of the direct signal Effect Level parameter Range 0 100 Regulates the level of the effect i e of the modulated line 110 OBERHEIM GM 1000 Digital Signal Processor Level parameter Range 0 100 Regulates the level of the output signal in the
26. the level of the output signal in the context of the effects chain in this case the sum of the processed sound and the direct sound mixed by means of the EFFECT LEVEL and DIRECT LEVEL parameters RING MODULATOR This effect modulates the amplitude of a sinusoidal carrier at audio frequency ring modulation 116 OBERHEIM GM 1000 Digital Signal Processor Raoarin Gtr BING HOD H FREQUENCY OF SEMSITIVITY Ez kHoDLULATIOM AATE MODULATION DEFTH 7 Wwawr lt s 44 FEFFECT 1E bHacTEF E uww svrvrsi 7E Frequency parameter Range 0 100 Regulates the frequency of the carrier in the range 500 Hz 5 KHz Sensitivity parameter Range 0 100 This parameter regulates the sensitivity of the modulation depth parameter to the signal dynamics Modulation rate parameter Range 0 100 This parameter regulates the speed of the modulation oscillator Modulation depth parameter Range 0 100 The parameter regulates the modulation depth Direct parameter Range 0 100 This parameter regulates the level of the direct signal Effect parameter Range 0 100 Regulates the level of the effect i e of the modulated lines Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain in this case the sum of the processed sound and the direct sound mixed by means of the EFFECT LEVEL and DIRECT LEVEL parameters AUTO PAN This is an effe
27. to be crotchets The parameter is used to set the delay time on the basis of the metronome speed of the song Pattern Notes Value parameter Range 1 4 1 4 1 8 1 4T 1 8 1 16 1 8T 1 16 1 32 1 16 1 32 1 64 1 32T 1 64 1 128 1 64T 1 128 1 128T OFF where represents a dotted triplet Selects the musical notation to be used for creation of the delay effect The user may select three of these parameters i e one for each delay line available Pattern notes Level parameters Range 0 100 Sets the output level of one of the three delay lines Feedback parameter Range 0 100 Regulates the quantity of signal returned to the input of the delay line selected thus the time before the repetitions cease Hi Damp parameter Range None 20K 19K 18K 17K 16K 14K5 12K5 11K5 10K 9K 8K 6K35 5K05 4K 2K 1K Displays the cut off frequency of a filter which eliminates from the taps all the frequencies higher than the one set Direct Level parameter Range 0 100 Regulates the level of the unprocessed signal Master parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain Control of the HOLD pedal The procedures are as described for the Standard Delay Control of the TAP pedal The TAP pedal is used to enter the Feedback Time parameter meaning the tap time not by manual editing but in real time in relation to the speed of the song the mus
28. within reasonable limits 88 OBERHEIM GM 1000 Digital Signal Processor 4 2 SELECTING A MEMORIZED PATCH Changing the memory bank To select a memory bank other than the one which is active e Locate the cursor on the memory bank indication using the CURSOR keys e Turn the VALUE encoder until the required memory bank is displayed Changing the memory patch To select a memory patch other than the one which is active e Locate the cursor on the memory patch indication using the CURSOR keys e Turn the VALUE encoder until the required memory patch is displayed Master level The MASTER LEVEL parameter controls the general output level of the selected memory patch the setting is memorized together with the patch itself Note that this level is not an absolute value but depends on the settings made during programming of the individual groups active To modify the MASTER LEVEL value e Use the CURSOR keys to locate the flashing cursor on the MASTER LEVEL parameter e Turn the VALUE encoder until a playback volume suitable to requirements is obtained e CAUTION an 3 displayed on the right of the words play mode indicates that this modification has not been memorized in the patch To make the modification permanent refer to point 5 3 MEMORIZING A PATCH in the EDIT MODE section 4 3 PROGRAMMING In PLAY MODE programming refers to the operations which can be performed on the instrument without necessarily having to carry
29. 0 5k6 8 0 Hz Bandwidth Q Range 0 5 1 2 3 Boost Cut Range 14db 14dB Direct Eq Hi Shelve parameters Frequency range 1k5 2k1 3k0 4k2 6k0 8k5 12k Hz Boost Cut Range 14db 14dB For this section refer to the explanations supplied in the section on the parametric equalizer These controls act on equalization of the direct sound VIRTUAL CHAMBER A reverberation effect which offers the user an interface in which he can define all the characteristics of the room to be simulated For example he can decide the size of the 136 OBERHEIM GM 1000 Digital Signal Processor room and the absorption capacity of its walls the position of the sound source and the listener s position and the direction in which he is facing Setting these programming parameters will enable you to create surprising effects absolutely beyond the capabilities of normal reverbs the GM 1000 will introduce you to the world of psycho acoustics normally the domain of extremely expensive sound processors used only by large recording studios 4001 Raarinctr REY YIRT CHAMBER CHAMEER WIDTH k DEFTH k HEIGHT ia FAGE LLLI m k Chamber Width parameter Range 1 40 metres Chamber Depth parameter Range 1 40 metres Chamber Height parameter Range 1 20 metres They set the dimensions in metres of the reverberation chamber to be simulated Master parameter Range 0 100 Regulates the level of the outpu
30. 1 OBERHEIM GM 1000 Digital Signal Processor How to copy the name of a patch It is possible to copy the name of the source patch besides its contents obviously in to the DESTINATION patch with the following sequence ENTER WRITE NAME Utility VALUE knob to select the destination ENTER WRITE Foot controller programming It can happen that one or both the Foot Controllers are shown to be assigned to the WHA effect on the SP 1 group even though it is in Bypass or deactivated In this case it is not possible to intervene on the assignament parameters in the MIDI FOOT CTRL page To obviate this incovenience it is sufficient to select a different effect in the SP 1 group by following this procedure EXIT SELECT SP 1 SELECT any effect other than WHA press EXIT twice and repeat the oprations 152 OBERHEIM GM 1000 Digital Signal Processor 10 INITIALIZATION PROCEDURE The GM 1000 control software is very complex and its programming and optimization has required a considerable effort Every condition of use of the device has been analyzed reproduced and verified but it is impossible to ensure that unpredictable external factors such as magnetic fields or serious mains power disturbances will not impair its operation in specific situations For this reason a number of special functions are grouped together in two video pages which can only be accessed using a special procedure to be used when the GM 1000 is switched on
31. 100 Determines the point where operation of the filter starts The operating mode is different for automatic and pedal wah Peak parameter Range 1 10 The parameter influences the form of the wah filter accentuating or reducing its resonance Sensitivity parameter Range 0 100 Regulates the sensitivity of the wah filter to variations in the control With sensitivity zero no effect is obtained while with sensitivity at the maximum setting the filter open closing range is the maximum possible Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain COMB FILTER This is a comb filter with two lines which provide two resonance frequency patterns It is the equivalent of a flanger with its modulation locked on one setting Since the parameters in the 2 lines are identical they will be described together Raoarin Gtr 2F1 COME FILTER k FREQUENCY 1 i00 KFREEGLUEHMCY 2 100 kFEEDEACK 1 1 bkFEEDEACKz 15 DAHF 1 KHIDAHFz EKOE PMi 1 m k LEVEL wF AW 127 Frequency 1 and Frequency 2 parameters Range 0 100 They set the resonance frequency for each line Feedback 1 and Feedback 2 parameters Range 100 100 They regulate the entity of the resonances by varying the feedback values of the two lines Hi Damp 1 and Hi Damp 2 parameters Range 1K 2K 4K 5K05 6K35 8K 9K 10K 11K5 12K5 14K5 16K 17K 18K 19K 20K None Thes
32. 3 Installation and instructions for use 3 1 Connection examples noce etes es etes etre uh rau page 84 3 2 Some advice about correct use of the GM 1000 page 85 3 3 Structure of the GM 1000 eta dta has ds page 86 4 Play mode 4 1 Keys and conie oda etna ees page 88 4 2 Selecting a memorized patch page 89 oe ovens u sy orale Su S ice Fere pores page 89 5 Edit mode 5 T Keys ahd comro S aei S una aa a DEO Endet RA teo usa page 91 5 2 93 5 3 Memorizing a patch page 94 6 Effects 6 1 Compressor ee a Sy A ee as ets page 95 6 2 Distortion DS T 101 6 9 Eq alizer EQ uu PE page 103 6 4 Amp simulator AMP pert ehe op a page 107 6 5 Modulation MOD pus 109 6 6 Special effects 1 SP1 bie eo oh i teneo page 114 6 7 Special effects 2 SP2 tee tr attt taa eap E page 119 5 9 Delay DEY esee Ep PEEL ES LER c sun qasi page 125 6 9 Reverberation REV
33. 4 1 5 Sets the compression ratio Threshold parameter Range 0 100 Sets the input signal threshold above which the effect is activated Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain Aun Raoarimn str 2 DEMOMER kX FREQ Hz Huh FRE THRESH s k EHVELOFE Waw QT FAGE Xfreq parameter Range 63 80 100 125 160 200 250 320 400 500 635 800 1 k 1 2k 1 6k 2k 2 5k 3 2k 4k 5k 6 4k 8k 10k 13k 16k Sets the trigger frequency ies on which the compression effect may operate Hum parameter Range 35 75 Hz only present with 2 bands hum Threshold parameter Range 0 64 only present with 2 bands hum These parameters select the cut off frequency and intervention threshold on the low frequency hum Envelope parameter Range 0 100 Filter envelope speed 21945 OBERHEIM GM 1000 Digital Signal Processor 6 8 DELAY DLY This effect is one of the best known and is used in combination with the guitar sound It consists of fragmented timed repetition of the original signal It is better known as the echo effect STANDARD DELAY This is the simplest of delays produced on a single mono line which can reach a delay of 2 seconds 4001 Raoarin str DL lt DELAY F TIHE ees mS E k HIDAHF Mone LEVEL a FCF i k HASTE aww 100 Delay Time param
34. ANALYZER a UIT TM s4dc alll HI FREEZE Z 40 0 160 S15 620 25k 25K SK 10K 20K The press FREEZE Edit to block the analysis By rotating the VALUE knob it will also be possible to obtain a numerical reading of the results of the analysis for each of the 31 bands CURSOR TO READ SPECTRUM ANALYZER 22 Hr 26 0 Hr JE T m 160 215 e301Z5k 25K SE 10K 20K 148 OBERHEIM GM 1000 Digital Signal Processor By pressing TEMPLT Edit it is possible to select one of the 15 memories Template which hold the relative data of the spectrum analyzer TEMPLATE MODE SPECTRUMANALYZER TEHFL1i TEHFLiz 12 TERFLi14 TEHFLi SELECT After selecting the Template with the VALUE knob press WRITE to save the results of the analysis or SELECT Edit to compare the current analysis with that in the memory selected by default all the Template memories are empty TEMPLATE SS haly ZER l 2 CORRECTION gt 34 dE 4o so 160 215 630 25K 2 5K SE 10k ZDE Proceeding with the analysis the display will show the contents of the analysis present the Template taken as a reference by means of the VALUE knob it is possible to read the corrections that has to be made for each band in order to obtain a frequency response equal to that memorized in the template 149 OBERHEIM GM 1000 Digital Signal Processor
35. DST Distortion Overdrive Crunch EQUALIZER EQ 10 Bands Graphic EQ Mono Parametric Guitar 5 Bands Graphic Stereo Parametric e SIMULATOR Guitar Bass MODULATION MOD Chorus Flanger Phaser Step Phaser Tremolo Vibrato e SPECIAL EFFECTS 1 SP1 Wha Wha Comb Filter Double Chorus Ring Modulate Auto Pan Fade In e SPECIAL EFFECTS 2 SP2 Shifting Delay 3 Voice Pitch Shifter Custom Shift 4 Voice Chorus Rotary Speaker Denoiser e DELAY DLY Standard Delay Tap Delay Stereo Delay Multi Delay Metronome 1 Delay Metronome 2 Delay REVERB REV Reverb Gate Reverb Virtual Chamber This can all be summed up by a simple chart 86 OBERHEIM GM 1000 Digital Signal Processor NR CMP GROUP DST GROUP Overdrive EQ GROUP GROUP MODGROUP SP1 GROUP 5 2 GROUP DLY GROUP REV GROUP Stnd Dly Metronom2 DI Reverb Gate Reverb Crunch Virt Chamber 87 OBERHEIM GM 1000 Digital Signal Processor 4 PLAY MODE The section which follows will describe the PLAY MODE we will discuss the way in which the GM 1000 will be used while the patches are being played The next section entitled EDIT MODE will describe the procedure for programming a patch This section will refer almost only to the main display page 4 1 KEYS AND CONTROLS Cursor Four green illuminated keys to the right of the display
36. HOT GND Unbalanced 6 3 mm jack connector Balanced Cannon connector Used for the following sockets Used for the following sockets Inputs L Mono R rear Inputs L Mono R rear Outputs L Mono R rear Outputs L Mono R rear Guitar Input front 11 2 GLOSSARY OF TERMS USED e Bypass its name suggests allows the user to listen to the sound with and without one or more sound modification effects in order to make comparisons e Compare procedure for comparing two sounds Normally used during editing to verify the quality of the changes made e dB abbreviation of Decibel unit of measurement of acoustic pressure Display liquid crystal display which shows all the information for the man device dialogue in graphic or text form e Dsp abbreviation of Digital Signal Processor e Edit function for modification of the device parameters e Foot Controller type of pedal control unit Allows commands to be given to the device while playing is in progress and of course the performer s hands are busy e Jack type of connection very widely used in the musical sector see diagram on types of connectors used LED abbreviation of Light Emitting Diode An electronic component which is widely used thanks to its reliability and low energy consumption Overload situation where a circuit is overloaded because the input signal is too high The main cause of distortion e Patch a combination of programming parameters which a
37. L 0 R 100 and L 100 R 0 Level parameter Range 0 100 Sets the output level of the selected tap within the range of values from 1 to 100 Feedback Time parameter Range 0 2000 msec Regulates the time which the signal takes to return to the input between 0 and 200 msec 126 OBERHEIM GM 1000 Digital Signal Processor Feedback Hi Damp parameter Range None 20K 19K 18K 17K 16K 14K5 12K5 11K5 10K 9K 8K 6K35 5K05 4K 2K 1K Displays the cut off frequency used by a filter which eliminates all the frequencies higher than the one set Feedback Level parameter Range 0 100 Regulates with a range of values of 0 100 the quantity of signal returned to the delay line input and thus the time after which the repetitions cease Direct parameter Range 0 100 Regulates the level of the direct signal on a scale of absolute values from 0 to 100 Master parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain within a range of values from 0 to 100 Control of the HOLD pedal The mechanism has already been explained with regard to the Standard Delay Control of the TAP pedal The TAP pedal is used to enter the Feedback Time or repetition time not by manual editing but in real time in relation to the speed of the song the musician is performing Its operating principle has already been explained with regard to the Standard Delay STEREO DELAY This is
38. XLR INPUT IMPEDANCE 10 KOHM INPUT SENSIBILITY 10 KOHM INPUT SENSIBILITY 4 DMB NOMINAL MIDI IN CONNECTORS DIN 5 PIN x2 OUTPUTS PHONES CONNECTORS JACK STEREO TRS OUTPUT LEVEL 22 MW WITH LOAD 50 OHM OUTPUT LEVEL 30 MW WITH LOAD 200 OHM LINE OUT REAR JACK CONNECTORS 2x UNBALANCED JACK TS MIN LOAD IMPEDENCE 600 OHM NOMINAL OUT LEVEL 4 DMB LINE OUT REAR CANNON CONNECTORS 2x BALANCED CANNON XLR MIN LOAD IMPEDENCE 600 OHM NOMINAL OUT LEVEL 10 DBM 10 DBM MIDI OUT CONNECTOR DIN 5 PIN MIDI THRU CONNECTORS DIN 5 PIN OTHER CONNECTIONS VOLUME CONTINUOS PEDAL TRS TAP TEMPO FOOT SWITCHES TS HOLD FOOT SWITCHES TS POWER SUPPLY MAIN VOLTAGE EUROPE 230 V A C 50 HZ MAIN VOLTAGE U S A 120 60 HZ POWER ASSORBTION 30 WATTS MAX MAX VOLTAGE FLUCTUATION 15 156 OBERHEIM GM 1000 Digital Signal Processor MIDI IMPLEMENTATION CHART Oberheim GM 1000 Date 03 Lug 96 Digital Signal Processor Version 1 33 FUNCTION TRANSMITTED RECOGNIZED REMARKS BASIC DEFAULT 1 CHANNEL CHANGED MODE Default Mode 3 Messages X Altered kkkkkkkkkk NOTE X NUMBER True Voice X VELOCITY Note ON X Note OFF Key s Ch s 7 I Volume Hold Sostenuto Soft Reverb Chorus PROGRAM CHANGE True SYSTEM Song Pos COMMON Song Sel Tune SYSTEM Clock REAL TIME Commands AUX Local On Off MESSAGES All note Active Sense O Reset
39. al gain is never excessive and is never much more than that with the effect bypass To control eventual digital distortion at the input e Use the GUITAR INPUT LEVEL control on the front panel N B 7he last two led segments in red indicate when the signal exceedes the threshold of 0 dB Due to the extreme speed at which the unit measures the level the momentaneous lighting of these red leds on the signal peaks can be considered normal and will not create any audibile digital distortion On the other hand any digital distortion introduced by an effect along the elaboration chain can become audible even in the case of a perfect setting of the input signal level To control eventual digital distortion introduced while programming an effect e With the EFFECT EDIT display showing during the programming press BYPASS local under the display e Set the parameter to a lower level e Check the LEVEL parameter of all the effect involving pre amplification CMP DST EQ AMP groups 150 OBERHEIM GM 1000 Digital Signal Processor 9 2 Programming Fine control of the timbre To be able to finely control the timbre of the instrument or the disired distortion try experimenting with the COMB FILTER effect in the SP 1 group This in fact excites the harmonics and will prove to be very useful for the imitation of particular sounds or to create a patch with characteristically personalized sounds A short cut It is possible to accede to an effec
40. ameter of the Metronome Delay effect When the FILTERS ON value is OUT the Panel function becomes available and replaces the Clock parameter on the display With the Panel parameter on ON any operation performed on the GM 1000 panel is encoded and made available in the form of exclusive system messages in the MIDI OUT output One use of this function may be to allow a series of editing operations to be saved by Midi on a sequencer ready for review later on the LCD display or playback during a performance together with the musical sequence to give a visual check on the modifications made to it It is also possible to insert modifications to the sound in a performance in real time in a way similar to the procedure used for the analogue synthesizers without memory in use in the Seventies However in this case the changes are made automatically without interfering with the musician s performance at the correct time and with mathematical precision by a Midi digital system which even allows an immediate visual check on the modifications on the display e CAUTION for correct recording and playback of a sequence which contains video page changes the main video page must appear on the GM 1000 screen in PLAY MODE This must be remembered both when starting to record and when playing back and Fc2 parameters Range Y Y yes N no These set whether or not the foot controllers are to be active The bypass key can be used to activate ball
41. ate Ext Key Exp Gate Establishes whether the control signal is given by the sum of the left hand and right hand signals or only by the right hand single In the second case the audio signal is the left hand signal only Ratio parameter Range 1 1 1 1 5 1 2 1 2 5 1 3 1 3 5 1 4 Gate Regulates the expansion ratio Threshold parameter Range 0 45 Sets the value of the level of the input signal below which the expansion effect comes into operation Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain 001 Roarin str F GATE 55 MIDDLE TFEELE z nHz l1kKEHz E Env parameter Range 0 100 Regulates the hold and release times of the expander Bass Parameter Range 0 100 Middle Parameter Range 0 100 Treble Parameter Range 0 100 99 OBERHEIM GM 1000 Digital Signal Processor B To M Parameter Range 63 80 100 125 160 200 250 320 400 500 635 800 1k 1k25 1k6 2k 2k5 3k2 4k 5k 6k4 8k 10k 12k8 16k Hz M To T Parameter Range 63 80 100 125 160 200 250 320 400 500 635 800 1k 1k25 1k6 2k 2k5 3k2 4k 5k 6k4 8k 10k 12k8 16k Hz These regulate the three sections of the crossover The information given in the description of the DeEsser Ducker applies DYNAMIC PROCESSOR A dynamic spectral processor This effect features a filter which allows the audio signal and or the
42. ating system since this version of the manual was completed The information contained in this version of the version of the owner s manual supercedes all previous version FCC RULES NOTE This equipment has been tested and found to comply with the limits for a Class B digital Device pursuant to Part 15 if the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instrucions may cause harmful interference to radio comunications Hovewer there is no guarantee that the interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determinated by turning the equipment off and on the user is encuraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced Radio Tv technician for help The user is cautioned that any changes or modification not expessly approved by the party responsable for compliance could void the user s authority operate the equipment
43. attack time corresponds to an increase in the sound sustain effect Bright parameter Range 0 5 This is an equalization targeting the medium high tones which help to make the sound emitted by the compressor more piercing and aggressive Level parameter Range 0 100 Regulates the general level of the compressor output LIMITER As its name implies the limiter limits the dynamics of the signal to a value which can be freely set by the user Raoarin Gtr CHE LIMITER k THRESHOLD 51 k RELEASE k LEVEL 30 Threshold parameter Range 0 45 96 OBERHEIM GM 1000 Digital Signal Processor Sets the value of the level of the input signal above which the limiter comes into operation The range goes from 6 dB Threshold 0 to about 40 dB Threshold 45 Release Time parameter Range 0 100 Sets the time for which the Limiter effect persists Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain EXPANDER In contrast with the Limiter this effect expands the dynamic range Au Roarin str CHF EXPANDER k RATIO k THEESHOLD k HOLD k RELEASE _ k LEVEL u Ratio parameter Range 1 1 1 1 5 1 2 1 2 5 1 3 Sets the expansion ratio from a minimum of 1 1 to a maximum of 1 5 Threshold parameter Range 0 45 Sets the value of the level of the input signal below which the expansion effect comes in
44. audio circuit in the absence of an input signal or in any case when its amplitude reaches very low audibility levels It is therefore not able to eliminate noise present simultaneously with the signal Since the level of noise produced by the GM 1000 effects is very low in any case it can be envisaged that in many situations the Noise Gate can be set to intervene on very low threshold levels or even at level zero Threshold parameter Range 0 90 Sets the threshold below which the Noise Gate comes into operation Attack Time parameter Range 0 10 Sets the amount of time which will pass before the circuit is broken when the signal passes above the threshold set by the Threshold parameter Release Time parameter Range 0 10 Sets the amount of time which will pass before the circuit is closed when the signal falls back below the threshold set by the Threshold parameter e SOME USEFUL HINTS set the Threshold value starting from 0 and with no input signal present so that only the background noise generated by the effects parameter settings is cut out finely adjust the Threshold parameter also listening to how the effect behaves with an input signal present set the Attack and Release values to your own personal taste but where possible do not allow the effect to intervene too quickly this also depends on the type of input signal if there is no background noise set the Threshold parameter on 0 the circuit will thus b
45. cessor Raoarin Gtr PROC BEGGS HIDDLE ATOT TREBLE SQQOHE En Env Parameter Range 0 100 Regulates the times of response to the signal dynamics Bass Parameter Range 0 100 Middle Parameter Range 0 100 Treble Parameter Range 0 100 B To M Parameter Range 63 80 100 125 160 200 250 320 400 500 635 800 1k 1k25 1k6 2k 2k5 3k2 4k 5k 6k4 8k 10k 12k8 16k Hz M To T Parameter Range 63 80 100 125 160 200 250 320 400 500 635 800 1k 1k25 1k6 2k 2k5 3k2 4k 5k 6k4 8k 10k 12k8 16k Hz These parameters control the crossover cut off frequencies The information given in the description of the DeEsser applies 6 2 DISTORTION DST DISTORTION This is absolutely the best known guitar effect It simulates the distortion of an amplifier which has been saturated so that it emits a hard piercing sound It is often used for soloists 4001 Roarin Gtr DISTORTION k HI FREQUENCY k TYFE Hi Ener3 b ORIVE a P LEVEL a a Type parameter Range Standard 1 Standard 2 Standard 3 Mellow 1 Mellow 2 Mellow 3 Boosted 1 Boosted 2 Heavy Tube 1 Heavy Tube 2 Heavy Tube 3 Hi Energy 1 Hi Energy 2 Hi Energy 3 Hi Energy 4 Sets the type of distortion Drive parameter Range 0 64 Controls the intensity of the effect HDamp parameter Range 4K0 3K2 2K5 2K0 1 6 Displays the cut off frequency used by a fi
46. cket on the front panel or aline signal to the rear INPUT L amp R it is in fact possible to carry out a real time analysis of the frequency content of the input signal One of the main applications that this function of the GM 1000 is destined to perform is without doubt the frequency response measurement in enviroments of audio amplification systems In fact is possible by means of the spectrum analyzer to visualize the analysis in realtime freeze it once an average value has been certified save it in one of the 14 slots available and compare it at a later time with the analysis of different situation The GM 1000 will therefore be able to visualize on the display all the corrections made on the 31 band Graphic equalizer of the amplification system to make the actual response of the installation as close as possible to another used as comparison With the exception of the equalizer in the amplification the implementation of functions available in the spectrum analyzer of the GM 1000 makes it completely self sufficient To recall the ANALYZER FUNCTION e While in play mode press ANALYZER in the TOOLS section INPUT OUTPUT SPECTRUM AMALYZER k INFOT LEFT FiIGHT k ouTFUT HOISE GENERATOR k LEVEL Waw SHOW 147 1000 Digital Signal Processor SETTING THE PARAMETERS By pressing ANALYZER in the TOOLS section the initial settings are shown in the display these are e INPUT Selects t
47. context of the effects chain in this case the sum of the processed sound and the direct sound mixed by means of the EFFECT LEVEL and DIRECT LEVEL parameters PHASER In principle this effect works like the Chorus and Flanger but instead of adding a modulated line to the direct sound it offers the addition of a line with slightly staggered timing In other words it reconstructs the effect created by two recorders playing the same tape simultaneously but one a very few milliseconds after the other The resulting sound created as frequencies are added and removed is similar to that obtained with the Flanger although in this case it is a little more tenuous and thinner Ab Roarin Gtr MOD PHAZER STEREO T 222 k DEFTH bkFHASZE k EHFHAZIZ amp kLEVEL Type parameter Range Stereo Mono The parameter which selects the type of Phaser Rate parameter Range 0 100 Sets the modulation frequency Depth parameter Range 0 100 This parameter regulates the depth of the modulation Manual parameter Range 0 100 This parameter sets the modulation delay Phase parameter Range 0 100 Allows the modification of the relative modulation phase Emphasis parameter Range 0 100 The parameter governs the amount of feedback to be returned to the effect input Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain 111
48. ct which makes an automatic panpotting assignment i e a stereophonic AQ Roarintr AUTO PAN k THRESHOLD TIME RELEASE TIME k FRATE 38 kDEFTH k LEVEL a w front assignment Threshold parameter Range 0 100 117 OBERHEIM GM 1000 Digital Signal Processor Sets the level of the input signal above which the effect is activated Attack Time parameter Range 0 100 Sets the amount of time which will pass after the input signal has exceeded the threshold before the tremolo starts Release Time parameter Range 0 100 In contrast with the Attack parameter this parameter sets the time for which the effect will last Rate parameter Range 0 100 Sets the modulation speed Depth parameter Range 0 100 Sets the depth of the modulation Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain FADE IN An effect which consists of a gradual rise in the volume attenuating or eliminating perception of the start of the input signal sound It is often used by guitarists to create a sound similar to that produced by a violin A Raoarin str k MODE DE EH k THRESHOLD w WwwswWa HOLC k LEVEL E d i ili Mode parameter Range SLIDER DE ENV This sets the operating mode of the effect With Slider once the trigger threshold is exceeded the volume will rise this will stop
49. ct will last Speed parameter Range 0 100 Sets the modulation speed Depth parameter Range 0 100 Sets the depth of the modulation Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain 6 6 SPECIAL EFFECTS 1 SP1 WAH WAH This simulates the well known effect which sounds exactly like its name It is obtained by means of a filter which is opened and closed automatically by the level of the signal itself or by means of a remote pedal 001 Roarin str k TRIGGER ALTO POST O k MODE gt BAHD Fass kFOLARITY P MANGAL SE FESE k SEHZITIVITY FL LEVEL Trigger parameter Range AUTO PRE AUTO POST PEDAL FC1 PEDAL FC2 Sets the type of control of the effect The two Auto options are provided to allow control by the level of signal present before compression PRE or downstream of all the preceding effects POST For pedal control there is the option of control using Foot Controller 1 FC1 or Foot Controller 2 FC2 of the optional foot controller unit FC 3000 Mode parameter Range LOW PASS BAND PASS The Wah filter can be preset as a Low Pass or Band Pass filter Polarity parameter Range WAH HAW The filter can be made to move towards the higher frequencies with rising control level Wah or to close as the level grows Haw 114 OBERHEIM GM 1000 Digital Signal Processor Manual parameter Range 0
50. e Normal LeftToRight RightToLeft Reverse The type parameter is used to select a conventional Gate a Reverse Gate or two effects of Panning between the channels Rev Time parameter Range 50 500 ms Controls the duration of the reverb WEE OBERHEIM GM 1000 Digital Signal Processor Pre Delay parameter Range 0 250 ms This parameter sets the effect delay Density parameter Range 0 10 Controls the density of the reflections Direct parameter Range 0 100 Regulates the level of the input signal Effect parameter Range 0 100 This parameter regulates the quantity of the effect Master parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain in this case the sum of the processed sound and the direct sound mixed by means of the EFFECT LEVEL and DIRECT LEVEL parameters 001 Raoarimtr REY REVERE EH VELOFE k SHAFE 4 ksLOFE 7 E R LOSHELVE 50 1088 HISHELVE LEK n PAGE Envelope Shape parameter Range 1 4 Envelope Slope parameter Range 0 10 Envelope Shape allows the user to choose from 4 overall envelope shapes while Envelope Slope controls their geometry The diagrams which follow illustrate the 4 different Normal and Reverse shapes NORMAL REVERSE
51. e included in the effects chain but will not have any effect 6 11 THE MIDI FOOT CONTROLLER PAGE This function can be used to set the parameters relating to use of the two optional pedal units which can be connected to the optional Oberheim FC 3000 remote control unit A number of the effects parameters can be assigned to each of these two foot controllers and can thus be controlled in real time It is important to note that all these parameters have an exclusively local nature so they can be freely assigned for each of the 384 memory locations available and saved in them 140 OBERHEIM GM 1000 Digital Signal Processor This video page is accessed from the main editing page by pressing the utility key FTCTRL Foot Ctrl parameter Range 1 2 Selects one of the two pedals for which the parameters assigned are to be modified Group parameter Range CMP DST EQ MOD SP1 SP2 DLY REV NR OFF Sets the group in which the foot controller is to be used Parameter parameter Selects the parameter to be modified using the foot controller In this case the range depends on the group selected since as we have seen in EDIT MODE the parameters often vary widely from one group to another Range parameter Sets the range of action for modification of the parameter If the value entered in the first parameter is lower than that of the second reversed or negative effects curves can be obtained Here again the ran
52. e settings attenuate the high frequencies by means of two separate filters for each line establishing their cut off frequency Mix 1 and Mix 2 parameters Range 100 100 115 1000 Digital Signal Processor These two parameters act on the levels of the two lines thus modifying the influence of the two resonance patterns Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain DBL CHORUS This is an additional Chorus module which differs from the one in the Modulation MOD block in that it has two different modulants the sum of which gives less regular repetition patterns The two modulants may have different frequencies and depths Aun Raoarin itr CHORUS FRATE 1 502 PRATE DEFTH 1 z 2 k FRE DELAY me if k DIRECT EFFECT ama 102 Rate 1 and Rate 2 parameters Range 0 100 Sets the frequency of each of the two modulants Depth 1 and Depth 2 parameter Range 0 100 This parameter regulates the modulation depth for each modulant Pre Delay parameter Range 0 100 This parameter sets the modulation delay time Direct Level parameter Range 0 100 This parameter regulates the level of the direct signal Effect Level parameter Range 0 100 Regulates the level of the effect i e of the modulated lines Level parameter Range 0 100 Regulates
53. eakers When a multieffect device is connected directly to the mixer of a P A system i e without using the amplifier this component is lacking The most noticeable result is the lack of body in the distortions which become cold and plastic Although the GM 1000 distortions have also been developed for use directly algorithms have been added to simulate the presence of an amplifier where the user is enabled to decide both its construction characteristics and the incidence of the device on the overall sound quality GUITAR AMP 001 Roarin Gtr GUITAR 4 ws CHARACTER 7 17 d k s k LEVEL 190 Amp parameter Range DI V S HV This parameter is used to set the type of amplifier to be simulated The values this field is able to assume are 1 DI BOX DI BOX linear response simulation 2 VALVE Simulation of a valve amplifier 3 SOLID STATE Simulation of a transistor amplifier 4 HOT VALVE Simulation of a saturated valve amplifier Character parameter Range 0 100 Parameter which sets the incidence of the AMP TYPE parameter in the context of the amp simulator 107 1000 Digital Signal Processor Box Type parameter Range 112 212 412 The Box type parameter allows the user to set the type of box with which the amplifier to be simulated is equipped 1 112 Simulation of a combo amplifier equ
54. ed by a filter which eliminates all the frequencies above the one set Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain 6 3 EQUALIZER EQ 10 BANDS GRAPHIC This is a 10 band graphic equalizer Since the frequencies at which it intervenes are preset the controls relate to the degree of attenuation and enhancement between 14dB and 14dB Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain MONO PARAMETRIC This is a parametric equalizer in which the user can modify the working frequencies band widths and intervention levels 001 Roarin Gtr EG HOMO PARA LOCUT HF 35 LOZHELVE k F EG Hz dE SHELVE k F 1KS Hz Ode HI CLIT FF FAGE k LEVEL a Low Frequency Cut filter Freq Range OFF 50 70 100 140 200 Hz This filter is used to eliminate the lowest frequencies Low Shelve filter Freq Range 50 70 100 140 200 280 400 Hz Boost Cut Range 14dB 14dB This filter of shelving type enhances or attenuates the frequencies between the value set and 0 Hz The parameters which can be modified are the working frequency and the trigger level High Shelve filter Freq Range 1k5 2k1 2k12 3k0 4k2 4k25 6k0 8k5 12k Hz 103 1000 Digital Signal Processor Boost Cut Range 14dB 14dB This filter of shelving t
55. ed by the level of the effect and of the Master parameter by means of the two EFFECT and MASTER settings described above 3 VOICE PEDAL PITCH SHIFTER A further version of the Pitch Shifter This algorithm allows production of three separate shifting lines separately A 001 Roarin Gtr FE2 3 I P ED AL SHIFT k HODE 1 4 k FINE k LEVEL Ti 100 kDIFEEET Www 10 W Mode parameter Range 1 5 120 OBERHEIM GM 1000 Digital Signal Processor This parameter sets the length of the Shifting Line parameter Range 1 3 This parameter establishes which of the 3 lines is to be modified Naturally only the line highlighted will be shown and modified Shift parameter Range 24 24 Fine parameter Range 50 50 These parameters clearly set the quantity of frequency shift required subdivided into a roughly accurate part set in semitones Shift and a fine part set in hundredths of a tone Fine Level parameter Range 0 100 Regulates the level of the individual shifting lines Direct parameter Range 0 100 Regulates the level of the direct signal Master parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain CUSTOM SHIFT A further version of the Pitch Shift which can be completely programmed by the user It allows any note chosen by the user to be added to a note played Au Roarinctr SP2 CUSTOM P ZHIFT
56. elected voice Direct parameter Range 0 100 Regulates the level of the direct signal Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain in this case the sum of the processed sound and the direct sound mixed by means of the LEVEL parameter of the 1st editing page of the effect and the DIRECT LEVEL parameter 122 OBERHEIM GM 1000 Digital Signal Processor ROTARY Simulates the typical rotary speaker effect widely used in combination with the electric order There are two rotary sections for the basses and trebles each with its own speed and switching time settings A i Roarin Gtr ZP ROTARY k SFEED SECTIO i sai RLOSECTION ww k HASTER FAGE Speed parameter Range SLOW FAST This switch represents one of the best known characteristics of the rotary speaker meaning the typical acceleration deceleration effect of the two rotors of the horns and the woofer Hi Section parameter Range 0 100 Lo Section parameter Range 0 100 Master parameter Range 0 100 The first two parameters regulate the levels of the sections relating to the trebles and basses while the Master regulates the general volume within the context of the effects chain A1 Rnarin Gtr SP2 ROTARY SECTION Fk SLOW RATE k RISE TIME k FAST RATE k FALL TIME La SECTION RATE k RISE TIME k FAST RATE k FALL TIME Hi Sect
57. eter Range 0 2000 msec Sets the delay time of the echo effect Feedback parameter Range 0 100 Parameter on the 0 100 scale of absolute values which regulates the quantity of signal returned to the input of the delay line and thus the time after which the repetition ceases Hi Damp parameter Range None 20K 19K 18K 17K 16K 14K5 12K5 11K5 10K 9K 8K 6K35 5K05 4K 2K 1K Displays the cut off frequency of a filter which eliminates all the frequencies higher than the one set Level parameter Range 0 100 Determines the level of the repetitions provided at the delay line output on an absolute value scale of 0 100 Direct parameter Range 0 100 Regulates the level of the direct signal on an absolute value scale of 0 100 Master parameter Range 0 100 Regulates the level of the output signal on a range of values of 0 100 in the context of the effects chain in this case the sum of the processed sound and the direct sound mixed by means of the EFFECT LEVEL and DIRECT LEVEL parameters 125 1000 Digital Signal Processor Control of the HOLD pedal The Hold pedal is active on all the Delay effects lts function is to repeat a memorized phrase indefinitely with the following mechanism The first time the pedal is pressed the pattern starting point is established while the second pressure determines where it will finish at the same time the feedback level is broug
58. ge of values depends on the parameter selected e midi control change can also be assigned to each pedal 141 OBERHEIM GM 1000 Digital Signal Processor 7 UTILITY MODE This section discusses a number of utility functions available on the GM 1000 The procedures for use of these functions using the CURSOR keys the VALUE encoder and the EDIT EXIT keys are as described in the previous points These functions are accessed by pressing the UTILITY key light on with the main menu page on the screen 7 1 MIDI SETTINGS Midi 1 and 2 parameter Range OFF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 OMNI Allows the user to set the Midi reception channel The OFF value cuts out reception while the OMNI setting enables all 16 Midi channels simultaneously Midi Out parameter Range OFF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Allows the user to set the channel for transmission of the Midi data generated by the GM 1000 The OFF value cuts out reception Device Id parameter Range 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Allows the user to set the device identification number from 1 to 16 if more than one GM 1000 devices are used connected by means of Midi connectors in order to differentiate their reception of the System Exclusive Sys Ex data Prg parameter Range STD TABLE Sets whether or not the GM 1000 is required to respond to program change messages in the standard wa
59. general output level shown on the main video page must be regulated in the same way as the input level in order to adapt the output volume to that of the equipment connected to the OUTPUT S Since this parameter can also be memorized more details of how it operates will be described in later sections Digital technology and levels The GM 1000 is an all digital instrument this means that some simple rules have to be followed during programming In the digital technology the maximum permitted dynamic threshold is 0 dB above this level even if it is only reached and exceeded for one moment so called digital distortion is created Digital distortion has nothing to do with the distortion often required by guitarists and generates an extremely unpleasant effect often mistakenly thought to be a real malfunction of the equipment Since the GM 1000 is equipped with filters with an operating range of 14 dB and it is possible to add together the action of a number of filters operating simultaneously the threshold of 0 dB may be exceeded This must therefore be borne in mind when programming the GM 1000 with frequent checks on the amplification gain introduced by the filters mentioned above by means of the bypass functions described in the PLAY MODE and EDIT MODE sections Adjusting the display contrast The GM 1000 is equipped with a large backlit LCD liquid crystal display In view of the characteristics of the LCD system the contrast has to
60. gnal returned to the input of the delay line selected thus the time before the repetitions cease Pan parameter Range L2 0 100 R 100 0 Determines the distribution of the selected line within the stereo front Level parameter Range 0 100 Sets the output level of the selected delay line Direct parameter Range 0 100 Regulates the level of the input signal Master parameter Range 0 100 131 OBERHEIM GM 1000 Digital Signal Processor Regulates the level of the output signal in the context of the effects chain Control of the HOLD pedal The procedures described for the Tap Delay apply Control of the TAP pedal The procedures described for Metronomic delay 1 apply 6 9 REVERB REV THE REVERBERATION EFFECT This effect is of fundamental importance and so we will describe it in greater detail than the previous effects Reverberation is the result of a series of sound reflections The order and value of each reflection depends on the ambient in which it occurs There are many factors in play within any one room or hall such as the dimensions of the place where the phenomenon occurs the nature of the material of which it is constructed and the objects it contains and the position of the listener We will look at this concept in greater depth by analyzing the 3 main components of natural sound together Direct sound in practice this is the sound emitted by the sound source which reaches our ears direct
61. he input or the sum of inputs from which the signal to be analyzed will be taken e OUTPUT Activate the generation of the control signals Pink noise or Sweep the monitoring of the input signal or the MUTE condition e LEVEL Sets the level of the internally generated signal or those monitored externally N B When the display is recalled the Analyzer function is automatically set in BYPASS The reason for this is that the Analyzer like all the control software section of GM 1000 memorizes the settings made by the user at the time of the last recall In the probable case that the last tests involved the use of a function that generated a high volume control signal an unexpected emission of this signal could happen with dangerous consequences for the user s hearing To avoid this happening the analyzer function must be activated manually by the user each time To activate the analyzer e Select the initial options of the INPUT and OUTPUT parameters e Set the LEVEL parameter to values close to zero Press the BYPASS local key under the display To begin the real time analysis e With the introductive page of the Spectrum Analyzer showing press SHOW edit The display will now graphically show the real time analysis of the 31 bands The parameters T TOP and R RANGE both expressed in dB should be noted these respectively set the maximum level and the range of the bars in the display REAL PROCESSING EPECTRUH
62. ht to the highest setting This will provide cyclic playback of the phrase played in the interval between the first and second times the pedal was pressed When the pedal is pressed again everything is returned to its previous status Control of the TAP pedal When the Standard Delay effect is present the TAP pedal is also active It is used to enter the Time i e delay time of this delay not by editing but in real time in relation to the speed of the song the musician is performing In practice the length of the delay will be set by measuring the time which passes between two consecutive pressures on the pedal TAP DELAY This delay offers not just one line or repetition tap as in the standard delay but no less than 8 of them each one separate with its own delay time a level and an attribution on the stereo front AM RoarinGtr DL TAF DEL kTA Fi iom SOR EO PLEVEL 20 kTAFZ 2005 SOR EO PLEVEL 20 FEACE b TIME d mz 12KS FLEVEL 20 k a awnPrrm b MACTEF as w oIIsrriT ios Tap parameter Range 1 8 Allows the user to select one of the 8 tap lines to be modified Time parameter Range 0 2000 msec Allows the user to modify the delay time of the selected tap between 0 and 2000 milliseconds Pan parameter Range L 0 100 L 100 0 Determines the distribution of the selected tap within the stereo front The values vary between
63. ician is performing Its operating principle has already been explained for the Standard Delay 130 1000 Digital Signal Processor METRONOMIC DELAY 2 Here again the main prerogative is the possibility of entering the delay times in musical notation rather than in milliseconds with a value expressed as B P M or beats per minute as reference Structurally the delay line has been subdivided into two parts thus producing 2 separate stereophonic delays each with its own parameters The parameters of the two delays which are absolutely identical will be described together 001 Roarin ctr DL HETROMOME 2 izo F DELAY 1 1i i amp bFEACK L EG A 50 PLEVEL EEEN k T lt a BPM parameter Range 30 250 BPM indicates the number of beats per minute in our case they are assumed always to be crotchets The parameter is used to set the delay time on the basis of the metronome speed of the song Delay parameter Range 1 2 Selects on which of the two lines the modifications are to be made Pattern Notes Value parameter Range 1 4 1 4 1 8 1 4T 1 8 1 16 1 8T 1 16 1 32 1 16 1 32 1 64 1 32T 1 64 1 128 1 64T 1 128 1 128T OFF where represents a dotted triplet Selects the musical notation to be used for creation of the delay effect F Back parameter Range 0 100 Regulates the quantity of si
64. in functions necessary for use and programming of the GM 1000 11 Cursor the four illuminated green keys allow the user to move the cursor around the display in order to select a parameter for modification 12 Group keys keys used for selecting the groups which make up the sound processing chain 13 Tools keys these keys allow access to the Bypass tuner and spectrum analyzer functions implemented in the GM 1000 14 Power key key used for switching the instrument on and off 82 OBERHEIM GM 1000 Digital Signal Processor 2 2 REAR PANEL 15 Pre Post switch selects where the volume control intervenes 16 Volume connector connector for connection of a volume pedal 17 Hold Switch jack for connection of an optional foot switch which activates the hold delay function infinite repetition of a memorized phrase 18 Tap Switch jack for connection of an optional foot switch allowing the tap delay speed to be set 19 Foot Controller connector for connection of the optional Oberheim FC 3000 foot controller 20 Midi In 1 and 2 five pin DIN connectors for reception of Midi messages from a remote Midi source 21 Ac Input connector for connection of the power supply lead supplied with the instrument 22 Midi Thru 1 and 2 five pin DIN connectors which retransmits the MIDI codes as output exactly as they are received by the Midi In connectors Used to create a chain of Midi devices 23 Midi Out five pin DIN c
65. in the early reflections Early Reflections Mix Level parameter Range 0 100 Regulates the quantity of early reflections in the effect 001 Roarin Gtr REVERE EC LOSHELVE FiHz 100 OF HISHELVE 12E FAGE Reverberation Eq Lo Shelve parameters Frequency Range 50 70 100 140 200 280 400 Hz Boost Cut Range 14db 14dB Reverberation Eq Mid Peak parameters Frequency Range 100 140 200 280 400 560 800 1ko 1k4 2k0 2k8 4k0 5k6 8 0 Hz Bandwidth Q Range 0 5 1 2 3 Boost Cut Range 14db 14dB Reverberation Eq Hi Shelve parameters Frequency range 1k5 2k1 3k0 4k2 6k0 8k5 12k Hz Boost Cut Range 14db 14dB For this section refer to the explanations supplied in the section on the parametric equalizer These controls act on equalization of the late reflections reverberation GATE REVERB A reverb effect generally used with percussive sounds Its main feature is that the background ambient effect is maintained at a given level for a certain period of time after which it is cut off sharply without the normal dying away noticed in ordinary reverb algorithms 001 Roarin Gtr REY REVERE RIGHT LEFT k REV TIME ms kDIRECT k FREE DELA Y m2 47 kEFFECT k DENSITY MASTER parameter Rang
66. ion Slow Rate parameter Range 0 100 Hi Section Fast Rate parameter Range 0 100 Lo Section Slow Rate parameter Range 0 100 Hi Section Fast Rate parameter Range 0 100 Parameters for regulation of the rotation speeds of the rotor for the basses and the horn for the trebles Hi Section Rise Time parameter Range 0 100 Hi Section Fall Time parameter Range 0 100 Lo Section Rise Time parameter Range 0 100 Hi Section Fall Time parameter Range 0 100 As stated when the SPEED switch is used to switch the rotation speed from SLOW to FAST the switch between the two speeds is not instantaneous but takes place in a time set by the value set using the RISE TIME parameter which is obviously different for the two sections Hi Section Rise Time for the High section and Lo Section Rise Time for the Low section Similarly when the user switches from FAST to SLOW the switching time is 123 1000 Digital Signal Processor determined by the FALL TIME Hi Section Fall Time for the High section and Lo Section Fall Time for the Low section DENOISER As its name suggests this effect is used to eliminate any hums or unwanted noises Aun HRoarin Gtr SP2 DENDISER k MODE z BANDS k RATIO 1 5 k w F LEVEL O FAGE Mode parameter Range 2 bands hum 2 bands Establishes the operating mode of the Denoiser Ratio parameter Range 1 1 1 2 1 3 1
67. ipped with one 12 inch speaker 2 212 Simulation of a combo amplifier equipped with two 12 inch speakers 3 412 Simulation of a combo amplifier equipped with four 12 inch speakers Influence parameter Range 0 100 Parameter which sets the incidence of the BOX TYPE parameter in the context of the amp simulator Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain BASS AMP ni HBnoarin Gtr AMP BABS AMF CHARACTER d k 4 k LEVEL a Amp Type parameter Range DI V S HV This parameter is used to set the type of bass amplifier to be simulated The values this field is able to assume are 1 DI BOX DI BOX linear response simulation 2 VALVE Simulation of a valve amplifier 3 SOLID STATE Simulation of a transistor amplifier 4 HOT SOLID STATE Simulation of a saturated transistor amplifier Character parameter Range 0 100 Parameter which sets the incidence of the AMP TYPE parameter in the context of the amp simulator Box Type parameter Range 112 12T 115 The Box type parameter allows the user to set the type of box with which the bass amplifier to be simulated is equipped 1 112 Simulation of a combo amplifier equipped with one 12 inch speaker 2 12T Simulation of a combo amplifier equipped with one 12 inch speaker with bass reflex system and tweeter 108
68. is key provides a GENERAL BYPASS of the entire chain of effects or in other words allows the user to listen to the input signal unchanged e main edit video page this key allows the user to choose between BYPASS BYP and ON status for the selected group e following edit pages this key provides a LOCAL BYPASS i e it switches the selected group only e g DST or CMP into BYPASS status 92 OBERHEIM GM 1000 Digital Signal Processor We will try to give a rapid explanation of the difference between these types of BYPASS and the types already seen in order to prevent misunderstandings and allow operators to use the GM 1000 correctly The LOCAL BYPASS function cuts out one group e g DISTORTION EQ or MODULATION while the GENERAL BYPASS disables the entire chain of effects simultaneously It must be underlined that the two types of BYPASS referred to here are temporary unlike the BYPASS activated in the main edit video page which will be memorized together with all the patch parameters It should also be remembered that the OFF and BYPASS statuses in the main edit video page have the same result in terms of sound The difference between these two values in practical terms becomes obvious when the optional Oberheim FC 3000 foot controller is used since the foot switches it provides allow the user to switch any one of the groups set in BYPASS status to ON On the other hand the foot controller will have no effect on the groups in OFF status
69. ith the location s to be transferred With ALL all the banks will be transferred together Location parameter Range 1 128 ALL Allows the user to set the number s of the memory location s to be transferred Naturally when ALL is selected all the locations of a bank will be transferred together Group parameter Range CMP DST EQ AMP MOD SP1 SP2 DLY REV ALL Allows the user to select the Group s to be transferred within the selected memory location Naturally ALL includes all the groups As the message on the LCD indicates once the parameters required have been selected and the correct Midi connections have been made the user simply starts the operation by pressing ENTER WRITE e N B the data Dump is also carried out if the Group selected is disactivated or in Bypass status The procedure for reloading the saved patches is very simple just send the data to the GM 1000 through the Midi In socket when the display is showing the PLAY MODE the multieffects unit will reply with a message which shows that data reception is in progress 7 4 MIDI MONITOR The MIDI MONITOR function enables the flow of the MIDI data arriving on the MIDI in 1 or 2 sockets of the GM 1000 to be seen on the display The practicality of such a function will be appreciated every time is necessary to control the data transmitted by any MIDI unit as the GM 1000 interpretes the data and also relays the type by writing in the display beside the val
70. lter which eliminates all the frequencies above the one set 101 OBERHEIM GM 1000 Digital Signal Processor Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain OVERDRIVE Valve type distortion softer than Distortion Aui Roarin str OVERDRIVE k HI FREQUENCY k TYFE Standard k ORIVE Type parameter Range Standard UK Tubes US Tubes Modern ovd Hot Tubes Flattened Brite Tube MOS FET 1 MOS FET 2 MOS FET 3 Sets the type of overdrive Drive parameter Range 0 64 Controls the intensity of the effect HDamp parameter Range 4 0 3K2 2K5 2KO 1 6 Displays the cut off frequency used by a filter which eliminates all the frequencies above the one set Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain CRUNCH A type of distortion lighter than the previous types Often used for the rhythm section 4001 Raoarin itr CRUNCH k HI FREQUENCY Standard 1 wa F LEVEL Type parameter Range Standard 1 Standard 2 Old Tubes UK feel US feel Fat Tubes Mid Peaked Hot Tubes Sets the type of crunch Drive parameter Range 0 64 102 OBERHEIM GM 1000 Digital Signal Processor Controls the intensity of the effect HiDamp parameter Range 4 0 3K2 2K5 2 0 1K6 Displays the cut off frequency us
71. ly without ever being reflected If the value of this parameter is high except for rare exceptions the sound source and the listener are close to each other Early reflections the sound is reflected a few times before it reaches our ears The distance and the frequency with which these reflections occur are closely linked to the dimensions of the ambient in which they take place Late reflection reverberation before reaching and surrounding us the sound has been broken down countless times in the environment acquiring a suffused dense nature which also depends on the material of which the ambient consists The sound which reaches our ears is therefore a complex blend of these fundamental elements REVERB Reverb is the classical ambient effect with two separate parts which can be positioned separately within time early reflections and reverberation or late reflection 001 Roarin Gtr REVERE LARGE F TIME Sec 14 DIRECT k FEE DELA r m3 kEFFECT k HI DEF FACE Type parameter Range Large Hall Medium Hall Large Room Small Room Chamber Plate Spring 132 1000 Digital Signal Processor The Type parameter sets the type of reverb and or the size of the room whose response is to be simulated The differentiations are obtained by controlling a large number of internal parameters such as delays and relative amplitude of the early
72. modify the operating level of a group e Use the CURSOR keys to locate the flashing cursor on the group level to be modified Turn the VALUE encoder until an effect suitable to requirements is obtained it may be necessary to vary the values of more than one group to obtain the desired results CAUTION an 3 displayed on the right of the words play mode indicates that this modification has not been memorized in the patch To make the modification permanent refer to WRITE MODE in the EDIT MODE section Press the Exit key to return to the main menu page 90 OBERHEIM GM 1000 Digital Signal Processor 5 EDIT MODE The section which follows will describe the EDIT MODE operating method or in other words we will discuss the way in which the GM 1000 will be used during programming of the patches In EDIT MODE the operator can carry out all the procedures relating to modification of the parameters connected to the programming of a patch The procedure for saving a new or modified patch in one of the 512 locations available will also be explained For use of the CURSOR keys and the VALUE encoder see PLAY MODE section Edit and Exit keys The EDIT key gives access to the EDIT pages Once the EDIT function has been accessed this key allows the user to display pages after those shown on the display in accordance with the instrument s structural hierarchy The following is a simple example MAIN MENU PAGE 1d EDIT
73. nd PRESENCE Au Aoarin etr EG GUITAR Bass HIDDILE TEEELE MOTCH FRESEMCE LEVEL 104 OBERHEIM GM 1000 Digital Signal Processor Bass parameter Range 0 100 Regulates the bass tone section Middle parameter Range 0 100 Regulates the middle tone section Treble parameter Range 0 100 Regulates the treble tone section Notch parameter Range 14dB 14dB The Notch parameter regulates a filter which has a differentiated operating mode its enhancement zone is centred on 1225 Hz while for attention it focuses on 1950 Hz Presence parameter Range 14db 14dB This filter is also differentiated For the enhancement zone it uses a Presence filter centred on 2100 Hz while for attenuation it uses another working on 10 KHz Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain 5 BANDS GRAPHIC This is a five band stereo graphic equalizer AQ EG 5 BANDS GRAPHIC k WOH dE RLEVEL k SIGH dE k MODE T k 1 0 4 dE k zkIBHz dE 10 dE 100 Hz 315 Hz 1K Hz 3K15 Hz 10k parameters Range 14 14 dB These select enhancement or attenuation for the specified frequencies Mode parameter Range Stereo Dual This parameter establishes whether the two sections Left and Right will be set up in the same way STEREO or in two different ways DUAL Level parameter Range 0 100 105
74. ng the instrument in order to avoid damage to its mechanical and electronic structures e To avoid the risk of electric shock never make the connections or use the instrument with wet hands e Never apply excessive force to the instrument s mechanical parts and keys e Do not stress the instrument in transit or during use e Do not place the instrument close to heat sources in excessively damp or dusty places or close to strong magnetic fields e When possible do not place the instrument close to units which generate strong interference such as radio and TV sets monitors etc e Never insert foreign bodies or liquids of any kind inside the instrument for any reason Never use solvents on the instrument s finishes To clean use only a soft cloth dipped in water The inside of the instrument does not contain any parts requiring maintenance by the user Never attempt to carry out repairs or modifications to the instrument always contact qualified personnel for any repairs e Only connect foot switches with normally open contact Prolonged use of unsuitable pedal units causes serious damage to the instrument s electronic components e Use the power supply lead supplied or an equivalent with earth Never use the instrument unless it is connected to an adequate earth connection Before making the connection check that the mains voltage is as indicated on the body of the adaptor Disconnect the power supply lead from the mai
75. nge 0 100 This parameter regulates the level of the effect acting together with the Pan parameter of the single lines Master parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain 119 OBERHEIM GM 1000 Digital Signal Processor Aun Roarin Gtr 2 DL k MODE 4 FSHIFT 4 FRE DELA m kFEEDEACK F L Mode parameter Range 1 4 This parameter sets the Shifting length Line parameter Range L R in case of Stereo A B in case of Arpeggiator This parameter determines which of the 2 lines is to be modified For uniformity with the selected type the two lines are called L and R in the case of Stereo and A and B in the case of the Arpeggiator Naturally only the line highlighted will be shown and modified Shift parameter Range 24 24 Fine parameter Range 50 50 These parameters clearly set the quantity of frequency shift required subdivided into a roughly accurate part set in semitones Shift and a fine part set in hundredths of a tone Fine Pre Delay parameter Range 0 100 in case of Stereo 0 300 in case of Arpeggiator This parameter sets the shifting delay time Feedback parameter Range 100 100 Regulates the entity of the resonances by adjusting the feedback values Pan parameter Range L 0 100 R 100 0 The Panning of the outputs of the two lines is also affect
76. ns socket if the instrument is to be out of use for long periods 81 OBERHEIM GM 1000 Digital Signal Processor 2 DESCRIPTION OF CONTROLS AND CONNECTORS 2 1 FRONT PANEL GM 1000 C 24BIT DIGITAL SIGNAL PROCESSOR WU AQ RoarinGtr EG S BANOS GRAPHIC k EE k LEVEL ec k GisHz Q dE MODE ST k iK Hz 44 PSKISH QE 10 4E 1 Phones Output this socket is a headphones output which allows the GM 1000 to be used even without connection to an amplification system 2 Phones Level used to regulate the volume of the signal sent to the PHONES OUTPUT 3 Input Level LED indicator for the input signal level 4 Display backlit display used to display various information such as the number and name of the memory to be used the programming parameters the sound spectrum analysis data etc 5 Value data input device which can be used to vary the values selected using the cursor keys Turn clockwise to increase the selected value or anti clockwise to decrease 6 Guitar Input dedicated input connector for a guitar 7 Input Level regulates the amount of signal supplied as input to the GM 1000 The setting applies to both the front and rear connectors 8 Midi message light indicating that the rear Midi In connectors are receiving midi messages 9 Lcd Contrast regulates the contrast of the liquid crystal display LCD 10 Function keys keys which allow the user to carry out the ma
77. old will be compressed the result will be a more noticeable sound which can more easily be sustained over time sustain effect After selecting the main edit page locate the cursor below the CMP group and press the EDIT key At this point the EDIT page of the COMPRESSOR GROUP will appear EDIT TO SELECT EFFECT GROUP EDIT DE R DUCK R FEXF GATE Dry FFE When the compressor group is selected and editing of the COMPRESSOR effect is activated the following video page will appear on the display 95 OBERHEIM GM 1000 Digital Signal Processor 81 Roarin Gtr CHP COHPRES E0R k RATIO E k THEEZHOLD waww ATTACK i k ERIGHT b LEVEL Il With the aid of the CURSOR keys and the ENCODER the following parameters be set Ratio parameter Range 1 1 1 2 1 1 5 1 2 1 3 1 5 1 10 1 20 1 00 1 This sets how much the dynamic range of the signal will be compressed on the basis of a directly proportional ratio The compression ratio 1 1 one to one will not compress the signal while if a value of 5 1 is set the output signal of this module will be compressed 5 times compared to the original Threshold parameter Range 0 45 Sets the level of the input signal below which the compression effect will operate Attack parameter Range 0 100 The attack parameter allows the user to set a delay in activation of the compression effect It must be noted that an increase in the
78. one of the number buttons on the unit see the foot controller user manual This avoids time wasting leaps between numbers or banks when the selection is made during a live performance Program Change Nr parameter Range 1 128 Allows the user to set the number of the Program Change to be used Location Bank parameter Range A B C Allows the user to select the Bank with the memory location to be associated to the Program Change Location N parameter Range 1 128 Allows the user to select the memory location to be associated to the Program Change Name Shows the name of the memory location currently associated to the selected Program Change CAUTION To be able to use the table of Program Changes set by the user the MIDI UTILITY PRG function must be switched to TABLE mode as described in the previous point 7 3 DUMP The Midi Dump function allows the user to transfer the entire contents of the GM 1000 memory or only a part of it to a remote data storage device computer sequencer or data filer connected to the Midi Out socket This utility thus allows the user to preserve the valuable programming work carried out on the device The GM 1000 has a selective Dump function which permits selection in the tiniest detail of the exact part of the memory s contents to be copied Bank parameter Range A B C ALL 144 1000 Digital Signal Processor Allows the user to set the bank s w
79. onnector for transmission of Midi messages generated by the GM 1000 24 L Mono R Input jacks for connection of a remote source to the GM 1000 There is a choice between a stereo connection using the two inputs simultaneously the recommended option and a mono connection using the L Mono connector only The front Guitar Input connector has precedence over the rear Input connectors These connectors are of unbalanced type 25 L Mono R Output the signal processed by the GM 1000 leaves the instrument from these two jacks There is a choice between a stereo connection using the two inputs simultaneously the recommended option and a mono connection using the L Mono connector only These connectors are of unbalanced type 26 L RXLR Input balanced Cannon XLR connections for connection of a remote source to the GM 1000 Use this connectors in a stereo configuration 27 L R XLR Output the signal processed by the GM 1000 leaves the instrument from these two balanced Cannon XLR connectors Use this connectors in a stereo configuration 83 OBERHEIM GM 1000 Digital Signal Processor 3 INSTALLATION AND INSTRUCTIONS FOR USE 3 1 CONNECTION EXAMPLES P A System P A System Volume Foot pedal switches Mixer Send Return Midi Unit Midi Controller Midi Out Midi In Keyboard Mixer effects send Guitar amplifier effects send 3000 foot controller optional VISCOUNT soit
80. oss Do not operate for a long period of time in high volume level or at a level that is unconfortable If you experience any hearing loss or ringing in the ears you should consult an audiologist 5 This products should be located away from heat sources such as radiators heat register or other products that produce heat 6 The power supply cord of the instrument should be unplugged from the outlet when left unused for a long period of time 7 Care should be taken so that objects do not fall and liquids are not spilled into the enclosure of the instrument 8 The products should be serviced by qualified personnel when a The power supply cord or the plug has been demaged or b Objects have fallen or liquid has been spilled into the product or c The products has been exposed to rain or d The products does not appear to operate normally or exibist a marked change in performance or e The products has been dropped or the enclosure demaged 9 Do not attemp to service the product beyond that described in the user maintenance instructions All other servicing should be referred to qualified personnel 1000 Digital Signal Processor CONTENTS 1 Introduction ASAT IP CUM OTIS eis au y tlt MCA ce A EAE ke page 81 2 Description of controls and connectors 2 1 Frontipanel cos odii LLLA UR page 82 2 2 Real PANG uu um uka awu e pp Eu s ERU Vet page 83
81. output volume obtained from the sum of the processes carried out by the individual groups The parameter is located in the main menu page to allow rapid adjustments even during live performances while the multieffect device is in PLAY MODE and the setting is memorized in the patch together with all the other parameters 93 OBERHEIM GM 1000 Digital Signal Processor 5 3 MEMORIZING PATCH Press the ENTER WRITE key with the key enabled the corresponding rectangle on the display must be solid to access the patch memorization function The display will show the relative page which shows e the current memory location CURRENT LOCATION e the destination memory location DESTINATION The GM 1000 automatically offers the current location To modify the bank and or the location use the CURSOR keys and the VALUE encoder To change the name of the patch press the flashing Utility NAME key to display select the characters to be modified using the CURSOR keys and change them using the VALUE encoder At this point press the ENTER WRITE key again to memorization the patch in the destination memory location A short message will confirm that the operation has been completed e CAUTION a modification to a patch can be memorized quickly by simply pressing the ENTER WRITE key twice in succession 94 1000 Digital Signal Processor 6 EFFECTS The chapter which follows describes all the effects in each
82. pen D major tuning OPEN Em open E minor tuning Dropped D guitar tuning with the 6th string one tone flat D e CAUTION the use of an instrument other than the one specified in the MODE parameter as input may lead to inaccuracies in evaluation of the tuning A4 parameter Range 435 445 Allows the reference frequency of middle A to be varied Rate parameter Range SLOW FAST Regulates the speed of response and of display of the minimal variations in tuning of the input signal The SLOW setting is very useful for tuning wind instruments or any instrument which does not have preset tuning Cents parameter Range ON OFF Activates or disactivate real time numerical display of the hundredths of a tone above or below perfect tuning 146 GM 1000 Digital Signal Processor Level parameter Range 0 100 Sets the level of the output signal When set at zero this parameter allows the user to tune the instrument without an output signal at the OUT connector so that other musicians or listeners are not disturbed Graph To tune send a sound to the GM 1000 and adjust the instrument s tuning until it is perfect KHODE GLIITAR STD Fad 0 440 FRATE FAZT KCEHTZ ONM Wa Perfectly tuned note 8 2 ANALYZER The Tool called ANALYZER is able to transform the GM 1000 into a real 31 BAND spectrum analyzer By connecting a good quality microphone to the GUITAR INPUT so
83. r parameter Range Mikes Ears Establishes the type of listener pair of microphones or ears Parallel parameter Range 0 100 Interacts with the MASTER parameter to regulate the quantity of input sent to the output parallel to the effect 001 Roarin Gtr YIRT CHAMBER REVEREER ATION EC LOSHELWE RF EO Hz k Enc 74E HID FE E k F 1025 Hz k En Ode ko 0E HISHELVE k F 12K Hz Ode FAGE Reverberation Eq Lo Shelve parameters Frequency Range 50 70 100 140 200 280 400 Hz Boost Cut Range 14db 14dB Reverberation Eq Mid Peak parameters Frequency Range 100 140 200 280 400 560 800 1ko 1k4 2k0 2k8 4k0 5k6 8 0 Hz Bandwidth Q Range 0 5 1 2 3 Boost Cut Range 14db 14dB Reverberation Eq Hi Shelve parameters Frequency range 1k5 2k1 4k2 6k0 8k5 12k Hz 139 OBERHEIM GM 1000 Digital Signal Processor Boost Cut Range 14db 14dB For this section refer to the explanations supplied in the section on the parametric equalizer These controls act on equalization of the reverberation effect created by Virtual Chamber 6 10 NOISE GATE NG The Noise Gate is at the end of the chain of effects and is always active Its job is to eliminate the background noises generated by the preamplification effects such as compressors and distorters or the hiss caused by very intensive equalization on the high frequencies By its very nature the Noise Gate acts by closing the
84. re saved in a memory location for instantaneous recall Play condition of use where the device is actually performing the music e Pedal Switch pedal which acts as an on off switch e Utility utility function These are often device setting and setup functions 154 1000 Digital Signal Processor 12 TECHNICAL SPECIFICATIONS AUDIO PERFORMANCE DIGITAL SIGNAL PROCESSING 2 CHANNEL A D 18 BIT 102 dB 128 X OVERSAMPLING SIGMA DELTA 2 CHANNEL D A 18 BIT 102 dB 64 X OVERSAMPLING SIGMA DELTA DATA PATH 24 BIT 138 dB MULTIPLIER 56 BIT 330 dB SAMPLING RATE 44 1 KHZ AUDIO BANDWIDTH 20 20 000 HZ 1 dB DYNAMIC DELAY MEMORY 192 KWORDS 4 46 s STATIC DELAY MEMORY 768 KWORDS 17 41 ms DATA ALU PROCESSING 33 9 MIPS ADDRESS ALU PROCESSING 39 5 MIPS MULTIPLIER SIZE 32 x 24 BITS MEMORY CAPACITY 4 BANKS X 128 PROGRAMS 512 TOTAL PROGRAMS TOOLS TUNER CONCERT PITCH A4 435 445 HZ TUNING RANGE 10 C8 TUNING ACCURACY 1 CENT MODES CHROMATIC 4 5 6 STRINGS BASS STANDARD GUITAR OPEN G 12 STRINGS GUITAR OPEN D GUITAR FLAT OPEN Em GUITAR DOUBLE FLAT DROPPED E INPUTS GUITAR FRONT CONNECTOR UNBALANCED JACK TS INPUT IMPEDANCE 500 KOHM INPUT SENSIBILITY 12 DBM LINE IN REAR JACK CONNECTORS 2x UNBALANCED JACK TS INPUT IMPEDANCE 50 KOHM INPUT SENSIBILITY 10 DBM 155 OBERHEIM GM 1000 Digital Signal Processor LINE IN REAR CANNON CONNECTORS 2x BALANCED CANNON
85. reflections part and the lengths and gains of the modules which make up the reverberation part Rev Time parameter Range 0 1 20 0 seconds with step of 0 1 secs Controls the duration of the reverb Pre Delay parameter Range 0 100 sec This parameter sets the reverb delay time Hi Damp parameter Range None 20K 19K 18K 17K 16K 14K5 12K5 11K5 10K 9K 8K 6K35 5K05 4K 2K 1K Displays the cut off frequency of a filter which eliminates all the frequencies higher than the one set Direct parameter Range 0 100 Regulates the level of the input signal Effect parameter Range 0 100 This parameter regulates the quantity of the effect Master parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain in this case the sum of the processed sound and the direct sound mixed by means of the EFFECT LEVEL and DIRECT LEVEL parameters AU Roarin Gtr REVERE EARLY REFLECTIONS FRE DELAY m FLOM FASS b MIX LEVEL e N B the second editing page cannot be selected if the Type parameter on the first page is set on Plate or Spring Early Reflections PreDelay parameter Range 0 100 msec This parameter controls the delay of the early reflections Early Reflections Low Pass parameter Range OFF 16k 12k7 10k 8k 6k3 5k 4k 3k1 2k5 2k 133 OBERHEIM GM 1000 Digital Signal Processor Regulates the attenuation frequency of the high tones
86. solid or disactivate ball hollow one or two foot controller s obtaining all the possible combinations in succession The second edit page contains BYPASS FC1 FC2 TUNER CMP DST EQ QMP MOD SP1 SP2 DLY REV parameters Range 0 31 64 119 With these parameters the user can set the Control Change value which will activate the Bypass function if selected the function assigned to Foot Controller 1 and 2 programmed in the Midi Foot Controller page to which users should refer for any explanations or activate or disable one group in the effects chain Preset function 143 OBERHEIM GM 1000 Digital Signal Processor When the compare Preset key is pressed the CONTROL CHANGE NUMBER parameter values set in the factory are restored This control allows the user to create a good starting point for his own modification sessions 7 2 PROGRAM TABLE This function allows the user to make a specific Program Change number sent by Midi recall any one of the 512 memory locations available In other words the user can make Program Change n 23 correspond to location 64 or 87 and not to location 23 as would be the case under the conventional Midi logic This function is very useful when using the optional Oberheim FC 3000 remote control unit since it makes it possible to concentrate the recall of a series of 10 memory locations chosen as the user wishes which can all be reached immediately in PROGRAM MODE by just pressing
87. ss after the input signal has exceeded the threshold before the tremolo will start Release Time parameter Range 0 100 In contrast with the Attack parameter this parameter sets the time for which the effect will last Waveform parameter Range 0 24 This parameter influences the waveform of the modulating signal by modifying the gradient of the up and down fronts of a trapezoidal waveform Panpot parameter Range 0 100 This parameter adjusts the relative time stagger between the Left and Right channels Speed parameter Range 0 100 Sets the modulation speed Depth parameter Range 0 100 Regulates the depth of the modulation Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain VIBRATO The effect works in a similar way to the Tremolo but instead of affecting the volume it acts on the tuning of the sound Au Raoarin itr HOD VIBRATO k THEESHOLD k ATTACK TIME k RELEGSE TIME k SFEED k LEVEL Threshold parameter Range 0 100 Sets the level of the input signal above which the effect is activated Attack Time parameter Range 0 100 113 OBERHEIM GM 1000 Digital Signal Processor Sets the amount of time which will pass after the input signal has exceeded the threshold before the tremolo starts Release Time parameter Range 0 100 In contrast with the Attack parameter this parameter sets the time for which the effe
88. t selected in a Group in a direct manner bypassing the intermediate display or displays when in the first EDIT MODE display Patch edit that shows the route of the elaborated signal by pressing the relative Group key The merging of two patches You can merge effects coming from two different memory locations by using the following procedure 1 Memorize the two patches to be merged in adjacent locations or in locations with the same number but in different banks for example C121 and C122 or C121 and D121 for convenience the first patch is called SOURCE and the second DESTINATION 2 Check that all that contain the effects to be taken from the SOURCE patch are active or in Bypass if this not so correct the condition and save in the same location number 3 Resave the DESTINATION patch making sure to deactivate all the groups will receive the effects that you need to transport do not set in BYPASS 4 Recall the SOURCE patch and stright afterwards the DESTINATION patch without passing through of the second 5 At this point you will have in memory a patch that contains the effects of the first plus those of the second 6 Activate in the DESTINATION patch all the groups that contain the new effects coming from the SOURCE patch and save everything in a third location of your choice 9 3 Writing the patches Fast memorizing of a patch You can memorize a modification made in a patch by simply pressing the EDITAWRITE key twice 15
89. t signal in the context of the effects chain Au Roarin tr REV YIRT CHAMBER SOURCE kx 1H bu LISTENER k X 1H iiH b A Human k ORIENT 4S TIGH 120 k SFRESO OF FAGE k SHOOTING jo Source X parameter Range 0 Chamber Width Source Y parameter Range 0 Chamber depth These two parameters set the position of the sound source inside the reverberation chamber Listener X parameter Range 0 Chamber Width Listener Y parameter Range 0 Chamber depth They set the positioner of the listener inside the reverberation chamber Listener D parameter Range 0 Human 1 min Width Depth with step 1 metre Regulates the distance between the left and right listening points This parameter is useful above all when a microphone recording is to be simulated Listener Orientation parameter Range 0 360 Step 5 Sets the direction in which the listener is facing in a range from 0 to 360 at intervals of 15 137 OBERHEIM GM 1000 Digital Signal Processor Listener Spread parameter Range 90 90 Step 5 They regulate the angle of spread of the listening process Positive angles indicate an outward extension of the spread The values range from 90 to 90 at intervals of 5 Listener Shooting parameter Range 0 360 Step 5 Regulate the listening pick up angle in a range from 0 to 360 at intervals of 5 The last three parameters set the virtual polar diagrams of the listening points
90. to operation The range goes from 0 corresponding to a level of about 14 dB to 45 corresponding to a level of about 48 dB Hold Time parameter Range 0 100 Release Time parameter Range 0 100 These set the persistence and release time of the Expander effect Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain DEESSER DUCKER This is a compressor without attenuation recovery The deesser function attenuates the hiss deriving from the pronunciation of the letter s The Ducker function is obtained by controlling the compression of a signal in relation to the level of another One typical example of the use of this effect is by radio broadcasters where the volume of the music is automatically turned down when the presenter speaks into the microphone 97 OBERHEIM GM 1000 Digital Signal Processor AQ CHP DE Z ER DUCE RE k MODE DE EZZEF k RATIO wl k THRESHOLD wawa 2 k LEVEL wawww ss 35 FAGE Mode parameter Range De Esser Ducker Establishes which of the two functions available is to be used Threshold parameter Range 0 45 They set the value of the level of the input signal above which the compression comes into operation and the compression ratio Ratio parameter Range 1 1 1 2 1 1 5 1 2 1 3 1 5 1 10 1 20 1 00 1 Sets the compression ratio Level parameter Range 0 100 Regulates the level of the output signal
91. ue it is very easy to distinguish note messages from control messages or clock messages System exclusive etc To visualize Midi data received e Connect the MIDI or 2 socket of the GM 1000 to the MIDI OUT socket of the MIDI unit that is going to send the data e Select MIDI MONITOR in the UTILTY MODE display with the CURSOR keys or the VALUE knob Observe the flow of data To momentary block the visualization e Press the key under PAUSE local BYPASS To clear the display e Press the key under CLEAR ENTER WRITE To exclude the real time messages from the visualization e Press the key under RT OFF EDIT e Press the key under RT ON EDIT to reactivate the function 145 OBERHEIM GM 1000 Digital Signal Processor 8 TOOLS 8 1 TUNER In practice this Tool is a digital tuner which can be used to check the tuning of an input signal MODE GLIITAR STO 440 FRATE FAST P CENTS ON LEVEL Ww Mode parameter Selects the tuning mode There are 12 operating options to cover the most widely varying uses CHROMATIC suitable for any use GUITAR STD standard guitar tuning 12ST OCT UP for 12 string guitars tunes the double strings in the octave above GUITAR FLAT guitar tuning half a tone flat GTR D FLAT guitar tuning a whole tone flat 6 STR BASS tuning for 6 string bass 5 STR BASS tuning for 5 string bass 4 STR BASS tuning for 4 string bass OPEN G open G major tuning OPEN D o
92. will be set up in the same way STEREO or in two different ways DUAL In the former case editing of the parameters modifies both sections LEFT and RIGHT simultaneously Conversely DUAL mode allows separate editing for the left and right channels the letter L LEFT or R RIGHT will identify the channel currently being modified Aui Roarin Gtr STEREO L H k F S00 Hz Fo E k dE k F Hz 246 106 OBERHEIM GM 1000 Digital Signal Processor Low Mid Peak filter Frequency Range 100 140 200 280 400 560 800 1k1 1k6 Hz Bandwith Q Range 0 5 1 2 3 Enhancement Attenuation Range 14dB 14dB This is a peaking filter which operates on the medium low frequencies capable of enhancing or attenuating the frequencies around the frequency set using the parameter F the filter bandwidth is set by the parameter Q the enhancement or attenuation is set by the parameter dB Filtro High Mid Peak Frequency Range 500 700 1 0 1k4 2k0 2k8 4k0 5k6 8k0 Hz Bandwith Q Range 0 5 1 2 3 Enhancement Attenuation Range 14dB 14dB Filter identical to the previous one with different band centre values shifted further towards the medium high frequencies 6 4 AMP SIMULATOR AMP One important component of guitar and electric bass sounds is the modification of the frequency response created by the amplifier s cabinet and sp
93. y or by means of the mapping which can be defined by the user described in the PROGRAM TABLE section Filters on parameter Range IN1 IN2 OUT Allows the user to select the outgoing and incoming messages to be filtered by means of the PRG CTRL SYSEX and CLOCK parameters in the same video page Program PRG parameter Range ON OFF Enables or disables reception transmission of memory patch changes also depending on the value set in the FILTERS ON parameter When the parameter is set as ON the GM 1000 is able to respond to program changes Control CTRL parameter Range ON OFF 142 OBERHEIM GM 1000 Digital Signal Processor Enables or disables reception transmission of continuous controls in real time also depending on the value set in the FILTERS ON parameter When the parameter is set as ON the GM 1000 responds to this type of command Sys Ex parameter Range ON OFF ALL ON OFF Enables or disables reception transmission of exclusive system Messages which allow data exchanges or communications with the optional Oberheim FC 3000 remote control also depending on the value set in the FILTERS ON parameter Select ON to activate the sys ex exchange function Clock Panel parameter Range ON OFF The Clock parameter present when the value selected for FILTERS ON is IN allows the user to enable or disable reception of the Midi Realtime Clock meaning the control which allows Midi synchronization of the BPM par
94. ype enhances or attenuates the frequencies between the value set and the maximum frequency the machine controls The parameters which can be modified are the working frequency and the trigger level High Frequency Cut filter Freq Range OFF 3k0 4k2 4k25 6k0 8k5 12k 16k Hz This filter eliminates the highest frequencies the cut off frequency can be adjusted Level parameter Range 0 100 Regulates the level of the output signal in the context of the effects chain A i Raoarin Gtr EG HONO FARA 15 k F 100 Hz 34E ZMO FEAK kk F 09 bo oE k EMC 1 dE SRO k F 289 Hz bo onc k 2 FAGE Aul Raoarin Gtr EG HONO PARA FEAE k F ZKE Hz Fo 0 S06 STHFEGK FF bc Q k Ec 546 amp TH k F 580 kon k Ode Peaking 1 6 filters Frequency Range 100 140 200 280 400 560 800 1k0 1 4 2k0 2k8 4k0 5k6 8k0 Hz Bandwith Q Range 0 5 1 2 3 Boost Cut Range 14 dB 14 dB These are 6 separate filters of peaking type for each of which the user can select the band centre frequency the Q factor operating range and the enhancement or attenuation value GUITAR This effect simulates the behaviour of the equalization section of a combo amplifier for guitar The user is offered the controls generally found on the console of the type of amplifier to be simulated These are BASS MIDDLE TREBLE NOTCH a

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