Dave Smith Instruments Evolver, Operation Manual

Page 1: ...Evolver Operation Manual Dave Smith Instruments ...

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Page 3: ...3 Evolver Operation Manual Version 3 2 April 2008 Dave Smith Instruments 1590 Sylvaner Avenue St Helena CA 94574 USA 2003 2008 Dave Smith Instruments www DaveSmithInstruments com ...

Page 4: ...nd 2 this device must accept any interference received including interference that may cause undesired operation This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil numerique de la classe B respecte toutes les exigences du Reglement sur le materiel brouilleur du Canada For Technical Support E mail to support davesmithinstrum...

Page 5: ...lter 26 Highpass Filter 27 Amplifier VCA 27 Feedback 28 Delay 28 Low Frequency Oscillators LFO 30 Envelope 3 31 Miscellaneous Audio Parameters 32 Trigger and Interface Parameters 33 Miscellaneous Timing Parameters 34 Miscellaneous Modulation Parameters 35 Modulation Destination Table 38 Modulation Source Table 40 MIDI Implementation 41 MIDI Parameters 41 Basic MIDI Messages 44 System exclusive Mes...

Page 6: ...by pushing the button and sliding off the prongs Then slide on the desired prongs and you re ready to go Next plug Evolver s signal outputs to your mixer sound system Hit the START button in the lower left corner to play a sequence Listen to other Programs by turning the Program knob top Main LED must be on and keep the sequencer running if you want When shipped Bank 1 has sequencer oriented Progr...

Page 7: ...rograms 70 through 127 in Bank 1 are sequences that are set up to play with MIDI notes All Programs in Bank 2 are meant to play from a keyboard with Pitch and Mod wheel and Pressure all enabled and no sequences Note the right decimal point in the display flashes whenever anything comes in MIDI input jack Note that it flashes even when MIDI input is disabled Using Evolver as a Signal Processor Simp...

Page 8: ...ss filter affects the sound what an ADSR envelope looks like etc Fortunately these days it is quite easy to find such resources on the Internet If you want to learn the lingo and the basics just try a search in Google or the search engine of your choice something like analog synthesizer tutorial You ll find plenty of good reading material Have fun Dave Smith ...

Page 9: ... meant to played from a keyboard and have no sequences programmed They all respond in different ways to keyboard pressure and mod wheel Program 128 is a basic keyboard program with most parameters off Velocity is routed to VCA Envelope Amount pressure goes to the filter mod wheel goes to LFO 1 Amount with LFO 1 controlling Oscillator Frequency This can be handy as a starting point without having t...

Page 10: ...er set of sequence programs all you need to do is hit the START button Programs 80 128 are sounds meant to played from a keyboard some have sequences programmed and some do not Most respond in different ways to keyboard pressure and mod wheel Special thanks to Program contributors including Tim Ande Ricardo Coen Don Gothard Gary LaRocco Mario Lavin Paul Nagle Kevin Paisley Robert Shanks Ravi Sharm...

Page 11: ...u will likely have to change a couple parameters see 1 and 2 above 5 I hit the Sequence Start button the LEDs advance but the envelopes don t trigger This is the opposite problem of 2 above check Trigger Select Row 7 Knob 7 it should be set to ALL or SEQ for the sequencer to trigger the envelopes 6 When I change Programs the Sequencer speed always stays the same Check Use Prgm Tempo if it is OFF t...

Page 12: ...rol voltages for the analog circuitry it can handle a wide range of modulation with high precision The DSP provides audio functions such as the Digital Oscillators Envelope Follower the Peak Hold detector and associated external trigger generator Highpass filter Distortion with noise gate Pan Delay and Hack It also handles the tuned feedback as well as the additional Delay feedback paths and all t...

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Page 14: ... program and it s sequence 2 Bank Select 1 4 Select Bank Each bank has 128 Programs for a total of 512 Programs If you hold the SHIFT button while changing the Bank the sound will not change until you release the SHIFT button If you hold the SHIFT button while changing the Bank and the sequencer is running when the SHIFT button is released the sequence will complete according to the length of Sequ...

Page 15: ...se Prgm Tempo Off On Use Program Tempo when set to OFF changing a Program will not change the tempo this is useful for keeping a constant tempo but using different sounds If set to On a Program change will change the tempo to the BPM and Clock Divide values saved with the Program When on changing the main BPM will also change the Program BPM and vice versa When off changing one has no effect on th...

Page 16: ...al Inputs You can select no gain 0db or a gain in steps of 3db up to 24d 24db Note that when the Input Gain knob is active the row and column LEDs become a simple VU meter with the rows showing the left channel and the columns showing the right The Clip LED is always active The Clip LED has a dual purpose it lights when either the left or right External Inputs clip and it also lights when there is...

Page 17: ... 16 Select which MIDI channel to send and receive data 1 to 16 ALL receives on any channel 8 MIDI Dump see table Allows transmission of Programs over MIDI as follows Display MIDI Transmit Operation ONE Send current program BAN Send all 128 programs in current bank ALL Send all programs in all three banks When this knob is active the sequencer START STOP LED will start blinking When the START STOP ...

Page 18: ...d smoother than programming a filter sweep using sequence steps The sequencer can also be routed to MIDI output destinations including Note Number Velocity Mod Wheel Pressure Breath and Foot Controller Velocity is a special case it only works if selected as the destination for Sequence 2 when Sequence 1 s destination routed to Note Number The same for Sequence 3 and 4 Sequence 4 can be velocity fo...

Page 19: ...l four sequences if you want all of them to be the same length And if each is a different length the rests see below and clock swing settings will follow sequence 1 as will the LEDs In other words the envelopes are always triggered from one sequence and can t be separately handled by each of the 4 sequences which makes sense on a monophonic instrument if you think about it Sequence 1 rows 1 and 2 ...

Page 20: ...s sequence A simple tap tempo feature is available With the sequencer off hold the RESET button and then hold the START STOP button for a count of four then lift up the START STOP button in time The sequencer will start with the new tempo Note the actual speed will depend on the Clock Divide setting The count will match if Clock Divide is set to 4n If set to 8n it will play twice as fast as your t...

Page 21: ...hange a parameter in that row Note you first select a knob and turn it one click it selects and displays the parameter but does not change the programmed parameter value Any further turning will then modify the value up or down This makes it easy to check the value of a parameter without changing it The following parameter details are grouped by function with row and column as indicated in the box...

Page 22: ...etting glide over 100 where it ranges from F02 to F00 equivalent to glides of 2 to 100 Thought not quite Glide related if you set glide all the way to maximum it goes to OFF which has the effect of disconnecting oscillator 1 from MIDI Sync 2 1 1 2 S Turns oscillator hard sync on or off Whenever oscillator 2 resets it will also reset oscillator 1 for the classic hard sync sound Oscillator 2 Oscilla...

Page 23: ...e will be around P50 Level 1 8 0 100 Sets the volume of oscillator 2 Glide 1 5 S 0 100 F02 F99 OFF The oscillator 2 Glide rate low numbers are faster Normal Glide covers the range from 1 to 100 0 is no glide A fingered mode that only glides when more than one note is held down is selected by setting glide over 100 where it ranges from F02 to F00 equivalent to glides of 2 to 100 Thought not quite G...

Page 24: ...th waves 97 128 the same as 1 32 Level 2 4 0 100 Sets the volume of oscillator 3 Glide 2 1 S 0 100 F02 F99 OFF The oscillator 3 Glide rate low numbers are faster Normal Glide covers the range from 1 to 100 0 is no glide A fingered mode that only glides when more than one note is held down is selected by setting glide over 100 where it ranges from F02 to F00 equivalent to glides of 2 to 100 Thought...

Page 25: ...with waves 97 128 the same as 1 32 Level 2 8 0 100 Sets the volume of oscillator 4 Glide 2 5 S 0 100 F02 F99 OFF The oscillator 4 Glide rate low numbers are faster Normal Glide covers the range from 1 to 100 0 is no glide A fingered mode that only glides when more than one note is held down is selected by setting glide over 100 where it ranges from F02 to F00 equivalent to glides of 2 to 100 Thoug...

Page 26: ...elope to the cutoff frequency This can be positive or negative allowing inverted envelope control of the filter Attack 3 3 0 110 Attack time of the filter ADSR envelope generator Decay 3 4 0 110 Decay time Sustain 3 5 0 100 Sustain Level Release 3 6 0 110 Release time Resonance 3 7 0 100 Sets the Resonance level of the filter at high settings the filter will self oscillate in 4 pole mode If the fi...

Page 27: ... which may be necessary for processing external audio signals or for Programs that drone Note if VCA Level is on full then the Envelope Amount will have no effect Env Amt 4 2 0 100 Amount of VCA envelope to the VCA level Attack 4 3 0 110 Attack time of the VCA ADSR envelope generator Decay 4 4 0 110 Decay time Sustain 4 5 0 100 Sustain Level Release 4 6 0 110 Release time Velocity 4 2 S 0 100 Amou...

Page 28: ... the main feedback loop It steps in semitones from C0 to C4 0 48 for a four octave range The exact frequency is influenced by other factors such as the filter frequency and number of poles which can drive it slightly sharp or flat Level 5 2 0 100 Level of feedback As the level goes up the feedback will eventually oscillate at the set Frequency Medium levels of feedback add depth and movement to th...

Page 29: ...o it will not work When too slow simply clamping it at one second which would not likely be a multiple of the step time would be the wrong approach In Evolver if the requested time is too long it divides the time in half until it fits within the one second of available memory So don t be surprised if changing longer sync delay times do not make any difference to the sound Display Timing Sync s32 D...

Page 30: ... different matrix locations Frequency 6 1 0 150 sync Selects the frequency of LFO Range 0 150 for unsynced LFO speed ranges from slow 30 seconds to very fast at 90 8 HZ C 2 and above the speed steps in semitones up to 150 261 Hz middle C Note some of the analog functions can t respond very well to the fastest LFO speeds due to speed limitations of the control voltages but it will certainly generat...

Page 31: ...nation see the Modulation Destination table on page 38 for a list of possible destinations Envelope 3 Envelope 3 is a general purpose envelope for modulation purposes Amount 7 1 99 99 Amount of envelope 3 Destination 7 2 see table Envelope 3 destination see the Modulation Destination table on page 38 for a list of possible destinations Delay 7 1 S 0 100 Delay time of Envelope 3 prior to Attack Att...

Page 32: ...te uses the Left channel signal level to gate both channels Noise Vol 8 5 0 100 The volume of white noise mixed into the filter The same amount goes into both channels Ext In Vol 8 6 0 100 The volume of external audio input connected to Left In and or Right In Ext In Mode 8 7 see table Selects the external input mode Display External Audio Input Mode st Stereo the left channel in goes to the left ...

Page 33: ...it is running The sequencer will not trigger the envelopes m is Combo mode the envelopes will only be triggered when a MIDI note is held and the sequencer is running in other words the MIDI notes will gate the sequencer AUTO START LED goes on m isr Combo mode 2 same as Combo except every time a MIDI note is hit the sequencer is reset to step 1 AUTO Ei The envelopes are gated by the Left external a...

Page 34: ...1 8 S see table Selects the key mode when playing from a MIDI keyboard Display MIDI input mode L0 Low note priority L0r Low note priority re trigger envelopes hi High note priority hir High note priority re trigger envelopes LA Last note hit priority LAr Last note hit priority re trigger envelopes P Bend Range 1 7 S 0 12 Pitch Bend Range in semitones Miscellaneous Timing Parameters BPM 1 3 S 30 25...

Page 35: ...ce 3 6 S see table General purpose modulation source select see list on page 40 for possible sources Since all mod sources in Evolver have a single destination the four general purpose Mods allow a method to send a mod source such as a sequence or LFO to another destination with a different amount Also there are some additional mod sources such as noise and the digital oscillators available allowi...

Page 36: ...on see the Modulation Destination table on page 38 for a list of possible destinations Mod Wheel Amt 8 1 S 99 99 Amount of MIDI Mod Wheel modulation This parameter has a smoothing filter which will clean up messy MIDI controller data into a clean response If you want to bypass the filtering use one of the four General Purpose Modulation sets which are unfiltered Destination 8 2 S see table Mod Whe...

Page 37: ...ontroller Destination see the Modulation Destination table on page 38 for a list of possible destinations Foot Amt 8 7 S 99 99 Amount of MIDI Foot controller modulation This parameter has a smoothing filter which will clean up messy MIDI controller data into a clean response If you want to bypass the filtering use one of the four General Purpose Modulation sets which are unfiltered Destination 8 8...

Page 38: ...illator 1 Pulse width 02p Oscillator 2 Pulse width 0ap Oscillator All Pulse width F43 Frequency Mod FM Amount Osc 4 3 F34 Frequency Mod FM Amount Osc 3 4 R43 Ring Mod Amplitude Amount Osc 4 3 R34 Ring Mod Amplitude Amount Osc 3 4 FiL Lowpass filter frequency FLS Filter Split separation between left right Res Resonance hip Highpass filter UCA VCA amount pan Pan Fbf Feedback frequency Fba Filter Amo...

Page 39: ...elope 3 Decay Rate Ead Envelope All Decay Rate E1r Envelope 1 Release Rate E2r Envelope 2 Release Rate E3r Envelope 3 Release Rate Ear Envelope All Release Rate F1f Filter 1 Left lowpass filter cutoff frequency F2f Filter 2 Right lowpass filter cutoff frequency F1r Filter 1 Left lowpass filter resonance F2r Filter 2 Right lowpass filter resonance dis Distortion will not work if distortion is set t...

Page 40: ...4 fen Filter Envelope aen Amp VCA Envelope en3 Envelope 3 eip External Audio Input Peak eie External Audio Envelope Follower m ipb Midi Pitch Bend m im iu Midi Mod Wheel m ipr Midi Pressure m ibr Midi Breath Controller m ift Midi Foot Controller m iue Midi Note Velocity m ino Midi Note Number m iep Midi Expression noi Noise 0s3 Oscillator 3 0s4 Oscillator 4 ...

Page 41: ...ived along with note controller data MIDI Xmit MIDI transmits determines what MIDI data to send Display MIDI Transmit Operation OFF No MIDI data sent ALL All MIDI data sent pro Only MIDI program changes sent par Only MIDI parameters received Poly Chain Poly Chain is used to link multiple Evolvers into a polyphonic system by selectively passing MIDI data through to the MIDI out jack where it can be...

Page 42: ... it is running The sequencer will not trigger the envelopes m is Combo mode the envelopes will only be triggered when a MIDI note is held and the sequencer is running in other words the MIDI notes will gate the sequencer AUTO START LED goes on m isr Combo mode 2 same as Combo except every time a MIDI note is hit the sequencer is reset to step 1 AUTO Ei The envelopes are gated by the Left external ...

Page 43: ...y mode when playing from MIDI Display MIDI input mode L0 Low note priority L0r Low note priority re trigger envelopes hi High note priority hir High note priority re trigger envelopes LA Last note hit priority LAr Last note hit priority re trigger envelopes RESET button Acts as a MIDI all notes off and resets all MIDI controllers when hit while the sequencer is not running ...

Page 44: ...v Mod Wheel directly assignable controller 1011 nnnn 2 0vvvvvvv Breath Controller directly assignable controller 1011 nnnn 4 0vvvvvvv Foot Controller directly assignable controller 1011 nnnn 7 0vvvvvvv Volume Combined with Master Volume and Program Volume 1011 nnnn 11 0vvvvvvv Expression Controller directly assignable controller 1011 nnnn 32 0vvvvvvv Bank Select 0 to 3 selects banks 1 to 4 others ...

Page 45: ...Decay 77 Amp Sustain 78 Amp Release 13 Highpass Filter Cutoff 85 Feedback Frequency 86 Feedback Level 12 Distortion 102 Delay 1 Time 103 Delay 2 Time 104 Delay 3 Time 105 Delay 1 Amount 106 Delay 2 Amount 107 Delay 3 Amount 108 Delay Feedback 1 109 Delay Feedback 2 System Common Messages Status Second Third Description 1111 0010 0vvvvvvv 0vvvvvvv Song Position Pointer LS Byte then MS Byte Position...

Page 46: ...ess MIDI Channel ALL always responds if 0vvvvvvv 0111 1111 0000 0110 Inquiry Message 0000 0001 Inquiry Request 1111 0111 End of Exclusive EOX Evolver responds with Status Description 1111 0000 System Exclusive SysEx 0111 1110 Non realtime message 0vvv vvvv If MIDI Channel ALL 0vvvvvvv 0111 1111 Otherwise 0vvvvvvv Channel Number 0 15 0000 0110 Inquiry Message 0000 0010 Inquiry Reply 0000 0001 DSI I...

Page 47: ...equencer Parameters Status Description 1111 0000 System Exclusive SysEx 0000 0001 DSI ID 0010 0000 Evolver ID 0000 0001 File Version 0000 1000 Sequence Parameter 00vv vvvv Sequence step 0 63 0 15 are sequence 1 steps 16 31 for sequence 2 etc 0000 vvvv Step value LS Nibble 0000 vvvv Step value MS Nibble 1111 0111 End of Exclusive EOX Main Parameters Status Description 1111 0000 System Exclusive Sys...

Page 48: ...bit format see next page Includes 128 bytes of Program parameters and 64 bytes of Sequence data 1111 0111 End of Exclusive EOX Waveshape Data Dump Status Description 1111 0000 System Exclusive SysEx 0000 0001 DSI ID 0010 0000 Evolver ID 0000 0001 File Version 0000 1010 Waveshape Data 0vvv vvvv Waveshape number 0 127 corresponds to Waveshapes 1 128 Only Waveshapes 96 127 can be sent to Evolver and ...

Page 49: ... 0000 System Exclusive SysEx 0000 0001 DSI ID 0010 0000 Evolver ID 0000 0001 File Version 0000 1111 Main Parameter Data 0vvv vvvv 32 nibbles LS then MS for 16 Main parameters Main Parameters are listed starting on page 53 1111 0111 End of Exclusive EOX Start Stop Button Status Description 1111 0000 System Exclusive SysEx 0000 0001 DSI ID 0010 0000 Evolver ID 0000 0001 File Version 0001 0010 Start ...

Page 50: ...ed from 7 parameter bytes and packed into an eighth byte which is sent at the start of the 8 byte packet Example Input Data Packed MIDI data 1 A7 A6 A5 A4 A3 A2 A1 A0 1 00 G7 F7 E7 D7 C7 B7 A7 2 B7 B6 B5 B4 B3 B2 B1 B0 2 00 A6 A5 A4 A3 A2 A1 A0 3 C7 C6 C5 C4 C3 C2 C1 C0 3 00 B6 B5 B4 B3 B2 B1 B0 4 D7 D6 D5 D4 D3 D2 D1 D0 4 00 C6 C5 C4 C3 C2 C1 C0 5 E7 E6 E5 E4 E3 E2 E1 E0 5 00 D6 D5 D4 D3 D2 D1 D0...

Page 51: ...em Exclusive SysEx 0000 0001 DSI ID 0010 0000 Evolver ID 0000 0001 File Version 0000 0110 Request Edit Buffer Transmit 1111 0111 End of Exclusive EOX Evolver will respond by sending out the current edit buffer in the format described in the Edit Buffer Dump on page 48 Request Waveshape Dump Status Description 1111 0000 System Exclusive SysEx 0000 0001 DSI ID 0010 0000 Evolver ID 0000 0001 File Ver...

Page 52: ...ent edit buffer in the format described in the Main Parameter Dump on page 48 Request Program Name Dump Status Description 1111 0000 System Exclusive SysEx 0000 0001 DSI ID 0010 0000 Evolver ID 0000 0001 File Version 0001 0000 Request Program Name Transmit 0000 00vv Bank Number 0 3 0vvv vvvv Program Number 0 127 1111 0111 End of Exclusive EOX Evolver will respond by sending out the Program Data in...

Page 53: ...tes 11 Thirty second Notes triplets 12 Sixty Fourth Notes triplets 6 0 1 Use Program tempo 0 Off 1 On 7 0 6 MIDI clock select 0 Use Internal clock don t send MIDI clock 1 Use Internal clock send MIDI clock 2 Use MIDI clock In 3 Use MIDI clock In and retransmit MIDI clock out 4 No change 5 No change 6 Use MIDI clock In but ignore MIDI Start Stop 8 0 1 Lock Sequence 0 Off 1 On 9 0 2 Poly Chain 0 Nor...

Page 54: ... 100 Oscillator 1 Fine Tune 0 50 cents 50 0 centered 100 50 cents 2 0 102 Oscillator 1 Shape 0 Sawtooth 1 Triangle 2 Sawtooth triangle mix 3 102 Pulse Wave Pulse width 0 99 3 0 100 Oscillator 1 Level 4 0 120 Oscillator 2 Frequency 0 120 in semitones 10 octave range 5 0 100 Oscillator 2 Fine Tune 0 50 cents 50 0 centered 100 50 cents 6 0 102 Oscillator 2 Shape 0 Sawtooth 1 Triangle 2 Sawtooth trian...

Page 55: ...ain 29 0 110 VCA Envelope Release 30 0 6 Output Pan 0 Left channel panned fully left Right fully to the right 1 Left channel panned mostly left Right mostly to the right 2 Left channel panned somewhat left Right somewhat to the right 3 Mono 4 Right channel panned somewhat left Left somewhat to the right 5 Right channel panned mostly left Left mostly to the right 6 Right channel panned fully left L...

Page 56: ... Range Description 48 0 198 Envelope 3 Amount 99 to 99 49 0 68 Envelope 3 Destination see destination table on page 60 50 0 110 Envelope 3 Envelope Attack 51 0 110 Envelope 3 Envelope Decay 52 0 100 Envelope 3 Envelope Sustain 53 0 110 Envelope 3 Envelope Release 54 0 13 Trigger Select 0 All The envelopes will be triggered by either the sequencer or MIDI notes 1 Seq The envelopes will be triggered...

Page 57: ... Parameter Range Description 64 0 200 Glide Oscillator 1 101 199 Fingered 200 osc midi off 65 0 1 Sync 0 off 1 on 66 30 250 Program tempo 67 0 12 Program Clock Divide see Master Clock Divide for selections 68 0 200 Glide Oscillator 2 101 199 Fingered 200 osc midi off 69 0 5 Oscillator Slop 70 0 12 Pitch Bend Range in semitones 71 0 5 Key Mode 0 Low note priority 1 Low note priority with re trigger...

Page 58: ...urce see Source Table on page 62 94 0 198 Modulation 3 Amount 99 to 99 95 0 68 Modulation 3 Destination see destination table on page 60 Parameter Range Description 96 0 24 Modulation 4 Source see Source Table on page 62 97 0 198 Modulation 4 Amount 99 to 99 98 0 68 Modulation 4 Destination see destination table on page 60 99 0 166 Delay 2 Time 100 0 100 Delay 2 Level 101 0 166 Delay 3 Time 102 0 ...

Page 59: ...0 118 0 198 Velocity Amount 99 to 99 119 0 68 Velocity Destination see destination table on page 60 Parameter Range Description 120 0 198 Mod Wheel Amount 99 to 99 121 0 68 Mod Wheel Destination see destination table on page 60 122 0 198 Pressure Amount 99 to 99 123 0 68 Pressure Destination see destination table on page 60 124 0 198 Breath Controller Amount 99 to 99 125 0 68 Breath Controller Des...

Page 60: ... width 16 Frequency Mod FM Amount Osc 4 3 17 Frequency Mod FM Amount Osc 3 4 18 Ring Mod Amplitude Amount Osc 4 3 19 Ring Mod Amplitude Amount Osc 3 4 20 Filter frequency 21 Filter Split separation between left right 22 Resonance 23 Highpass Frequency 24 VCA amount 25 Pan 26 Feedback frequency 27 Feedback Amount 28 Delay Time 1 29 Delay Time 2 30 Delay Time 3 31 Delay Time All 32 Delay Amount 1 33...

Page 61: ... 58 Envelope 3 Decay 59 Envelope A Decay 60 Envelope 1 Release 61 Envelope 2 Release 62 Envelope 3 Release 63 Envelope A Release 64 Filter 1 left Cutoff Frequency 65 Filter 2 right Cutoff Frequency 66 Filter 1 left Resonance 67 Filter 2 right Resonance 68 Distortion Sequencer only destinations 69 Tempo Clock multiplier 70 MIDI Note Out 71 MIDI Velocity Out 72 MIDI Mod Wheel Out 73 MIDI Pressure Ou...

Page 62: ... 4 9 Filter Envelope 10 Amp VCA Envelope 11 Envelope 3 12 External Audio Input Peak 13 External Audio Envelope Follower 14 Midi Pitch Bend 15 Midi Mod Wheel 16 Midi Pressure 17 Midi Breath Controller 18 Midi Foot Controller 19 Midi Note Velocity 20 Midi Note Number 21 Midi Expression 22 Noise 23 Oscillator 3 24 Oscillator 4 ...

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Page 64: ...Dave Smith Instruments 1590 Sylvaner Avenue St Helena CA 94574 USA www DaveSmithInstruments com ...