Dave Smith Instruments TETR4 Operation Manual Download Page 8

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MIDI Implementation ...............................................................................41

MIDI Messages....................................................................................41

NRPN Messages .................................................................................44

Global Parameter Data........................................................................45

Program Parameter Data ....................................................................46

Combo Parameter Data.......................................................................52

Sysex Messages .................................................................................56

Packed Data Format............................................................................61

Hidden Functions ....................................................................................62

Summary of Contents for TETR4

Page 1: ...Operation Manual...

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Page 3: ...Tetra Operation Manual Version 1 2 February 2010 Dave Smith Instruments 1210 Cabrillo Hwy N Half Moon Bay CA 94019 1449 USA 2009 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 Caus...

Page 5: ...repairs or service provided or attempted by anyone other than Dave Smith Instruments or an Authorized Service Center IN NO EVENT SHALL DAVE SMITH INSTRUMENTS BE LIABLE FOR ANY INDIRECT INCIDENTAL COLL...

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Page 7: ...ameters 19 VCA Parameters 20 LFO Parameters 21 Envelope 3 Parameters 22 Modulation Parameters 23 Unison Parameters 24 Push It Switch Parameters 25 Keyboard Mode Parameters 25 Clock Parameters 26 Arpeg...

Page 8: ...MIDI Implementation 41 MIDI Messages 41 NRPN Messages 44 Global Parameter Data 45 Program Parameter Data 46 Combo Parameter Data 52 Sysex Messages 56 Packed Data Format 61 Hidden Functions 62...

Page 9: ...ecrement and switches to step through the programs Hold the switches down briefly to increment or decrement the bank There are 4 banks of 128 programs Banks 1 and 2 are the Prophet 08 factory programs...

Page 10: ...ynthesizer functions It assumes you already know what an oscillator is how a low pass filter affects the sound what an ADSR envelope looks like and so on Fortunately these days it is quite easy to fin...

Page 11: ...Thru using the MIDI Out Select parameter in the Global menu Poly Chain Out Up to four Tetras can be chained for increased polyphony and one or two Tetras can be poly chained with a Prophet 08 For det...

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Page 13: ...ply press the mode switch See Program Parameters starting on page 17 for more information In Combo Mode the display shows the name and number of the current combo Editing any of the parameters puts Te...

Page 14: ...r cancel various operations In Edit Mode they increase decrease the parameter value They are also used to select Tetra s four program banks Hold increment briefly to switch to the next highest bank ho...

Page 15: ...illators The relative interval between the two oscillators is in each voice is maintained even when the extremes are reached Cutoff Controls the filter cutoff Resonance Controls filter resonance Note...

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Page 17: ...o an advanced version of the editor with more features can be purchased from our Web site Note The Prophet 08 s controls map directly to Tetra s so if you have a Prophet 08 you can use it as a MIDI co...

Page 18: ...controlled by the Feedback Gain parameter then through a VCA for feedback volume control and then to the filter input Turning up the Feedback Volume will cause varying amounts of the audio output to...

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Page 21: ...ck is received and transmitted MIDI Parameter Send NRPN CC Off Changes to the values of Tetra s front panel controls are transmitted via MIDI as Non registered Parameter Number NRPN controllers or as...

Page 22: ...y affect Tetra When off the controls are transmitted via MIDI but do not directly affect the local device that is Tetra This is primarily useful for avoiding MIDI data loops that can occur with some e...

Page 23: ...g of 63 and turn the pot all the way up it will only go to 90 To get to the maximum value of 127 you first have to turn down until the value is at the other extreme and the pot is at the limit of its...

Page 24: ...er in SysEx format or for sending them to another Tetra via a direct MIDI connection The dumps include Program and Bank numbers so when received the programs will be stored in the same location Progra...

Page 25: ...n each of the 4 knobs to a different parameter that makes sense for that particular program providing extra live control Though it is certainly possible to perform detailed program generation and edit...

Page 26: ...taves below oscillator 2 This parameter controls the level Miscellaneous Oscillator Parameters Sync 2 1 Off On Turns oscillator hard sync on With sync on whenever oscillator 2 resets it will force osc...

Page 27: ...er As the value increases so does the effect of the feedback Feedback Gain 0 127 Feedback Gain boosts the level of the feedback signal and is interactive with and dependent upon Feedback Volume If Fee...

Page 28: ...he time the filter envelope is triggered and when the Attack portion actually begins Attack 0 127 Sets the Attack time of the filter ADSR envelope generator Decay 0 127 Sets the Decay time Sustain 0 1...

Page 29: ...127 Sets the volume of the current program to match volumes between programs Note There is enough gain in the synth voice that with some settings some mild clipping distortion may be heard If this ha...

Page 30: ...per step Shape see table Selects the LFO waveshape Display LFO Shape Triangle Triangle Rev Saw Reverse Sawtooth Sawtooth Sawtooth Square Square Wave Random Random changes once per cycle for sample and...

Page 31: ...heel Key Pressure Breath Control Velocity and Foot Controller Since each Tetra mod source has a single destination the four general purpose Mods provide a way to send a mod source such as a sequence o...

Page 32: ...tination Selects the destination to which the breath control is routed See Modulation Destinations on page 35 for a list of possible destinations Veloc Amount 127 127 Sets the maximum amount of modula...

Page 33: ...0 Sets the note that plays when PUSH IT is pressed Velocity 0 127 Sets the MIDI note on velocity Mode Normal Toggle When set to Normal PUSH IT responds like a key press it and a note plays release it...

Page 34: ...ammed tempo for the sequencer in BPM beats per minute Clock Divide see table Sets the note value for each sequence step relative to the BPM Display Tempo Timing Division Half BPM 2 Half note Quartr BP...

Page 35: ...of each step a destination of Filter or Filter Envelope Amount will produce different filter settings per step Typically however at least one sequence is routed to an oscillator to control pitch The...

Page 36: ...four sequence tracks For a complete list see Modulation Destinations on page 35 Seq 1 2 3 or 4 Steps C0 D5 or 0 125 Reset Rest Sets each step value for each of the four sequence tracks The values are...

Page 37: ...h this may not make sense in all cases changing all four programs in a combo with a single control makes for some very interesting live editing possibilities Each of the Assignable Parameters knobs co...

Page 38: ...thout affecting the assignments in the original program Simply press ASSIGN PARAMS and choose the desired parameters as in Program Mode Note A few parameters do not appear in Combo Mode or appear only...

Page 39: ...t per voice VCA Level VCA Velocity Amount and any modulation to VCA amount will also affect the voice volume Combos and Multi Mode Combos can also be used to cue up programs used in Multi Mode When Mu...

Page 40: ...ate instrument to InOut4 For four Tetras set the second instrument in the chain to InOut8 and the third to InOut4 Regardless of how many are chained together the last Tetra is always set to In End You...

Page 41: ...lar to Tetra s FEEDBACK GAIN is not programmable so it may take some tweaking to get feedback to sound the same on Mopho and Tetra even if the same programs are loaded in both Programs that don t use...

Page 42: ...Poly Chain Configurations Using Tetra Mopho and the Prophet 08 If Out 4 and Out 8 do not appear as poly chain options on the Prophet contact support davesmithinstruments com for information about upda...

Page 43: ...ction USB Notes Under Mac OS X Tetra will appear as a MIDI port when connected via USB and can be configured using the Mac s Audio MIDI Setup application typically found in Applications Utilities Unde...

Page 44: ...in while a program has the Tetra port open you may have to resync That usually means going to the USB Audio Device or DSI Tetra Properties as in the procedure above and clicking OK If Tetra is no long...

Page 45: ...eq LFO 2 Frequency LFO 3 Freq LFO 3 Frequency LFO 4 Freq LFO 4 Frequency LFOAllFreq All LFO Frequencies LFO 1 Amt LFO 1 Amount LFO 2 Amt LFO 2 Amount LFO 3 Amt LFO 3 Amount LFO 4 Amt LFO 4 Amount LFOA...

Page 46: ...nvelope Release Rates Mod 1 Amt Modulator 1 Amount Mod 2 Amt Modulator 2 Amount Mod 3 Amt Modulator 3 Amount Mod 4 Amt Modulator 4 Amount Fback Vol Feedback Volume Sub Osc 1 Sub Oscillator 1 Level Sub...

Page 47: ...LFO 1 LFO 2 LFO 2 LFO 3 LFO 3 LFO 4 LFO 4 Filt Env1 Filter Envelope VCA Env 2 Amp VCA Envelope Envelope3 Envelope 3 PitchBend Pitch Bend Mod Wheel Mod Wheel Pressure Pressure Aftertouch MidBreath MIDI...

Page 48: ...LFO 3 Destination LFO 3 Key Sync LFO 4 Frequency LFO 4 Shape LFO 4 Amount LFO 4 Destination LFO 4 Key Sync Env 3 Destination Envelope 3 Amount Envelope 3 Velocity Envelope 3 Delay Envelope 3 Attack En...

Page 49: ...n Out MIDI clock is received and transmitted MIDI Parameter Send NRPN CC Off Changes to the values of Tetra s front panel controls are transmitted via MIDI as Non registered Parameter Number NRPN cont...

Page 50: ...roller 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...

Page 51: ...MIDI Parameter Receive is set to either CC or All in Global Parameter CC OSC 1 FREQ 20 OSC 1 FREQ FINE 21 OSC 1 SHAPE 22 GLIDE 1 23 OSC 2 FREQ 24 OSC 2 FREQ FINE 25 OSC 2 SHAPE 26 GLIDE 2 27 OSC MIX...

Page 52: ...parameter value LSB CC 0vvv vvvv Parameter value LSB The parameter number can be found in the two tables below one for Global parameters and the other for Program parameters The parameter numbers and...

Page 53: ...en both MSB and LSB received Global Parameter Data The following table shows the Global data that is sent and received on global parameter dumps and the corresponding NRPN number when sent received in...

Page 54: ...umber in the program and edit buffer dumps are different than the NRPN numbers as seen this was to maintain NRPN compatibility with the Prophet 08 as much as possible Parm A B Range Description 0 0 20...

Page 55: ...23 18 218 0 127 Filter Audio Modulation 24 19 219 0 1 Filter Poles 0 2 pole 1 4 pole 25 20 220 0 254 Filter Envelope Amount 127 to 127 26 21 221 0 127 Filter Envelope Velocity Amount 27 22 222 0 127 F...

Page 56: ...list below 46 41 241 0 1 LFO 1 Key Sync Off On 47 42 242 0 166 LFO 2 Frequency same as LFO 1 48 43 243 0 4 LFO 2 Shape same as LFO 1 49 44 244 0 127 LFO 2 Amount 50 45 245 0 43 LFO 2 Mod Destination S...

Page 57: ...254 Mod 4 Amount 127 to 127 82 76 276 0 43 Mod 4 Destination See Modulation Destination list below 107 77 277 0 43 Sequence 1 Destination See ModDestination list below 108 78 278 0 43 Sequence 2 Dest...

Page 58: ...Low note priority 1 Low note priority with re trigger 2 High note priority 3 High note priority with re trigger 4 Last note hit priority 5 Last note hit priority with re trigger 93 96 296 0 4 Unison M...

Page 59: ...Keyboard Mode Normal Stack Split 120 120 135 320 335 0 127 Sequence Track1 steps 1 16 0 to 125 Normal sequence step value 126 Reset 127 Rest 136 136 151 336 351 0 126 Sequence Track 2 steps 1 16 0 to...

Page 60: ...34 All Env Decays 35 Env 1 Release 36 Env 2 Release 37 Env 3 Release 38 All Env Releases 39 Mod 1 Amt 40 Mod 2 Amt 41 Mod 3 Amt 42 Mod 4 Amt 43 Feedback Volume 44 Sub Osc 1 Level 45 Sub Osc 2 Level 4...

Page 61: ...525 781 1037 1293 1549 17 NOISE LEVEL 526 782 1038 1294 1550 20 FILTER FREQ 527 783 1039 1295 1551 21 RESONANCE 528 784 1040 1296 1552 22 FIL KEY AMT 529 785 1041 1297 1553 23 FIL AUDIO MOD 530 786 10...

Page 62: ...1587 57 LFO 4 FREQ 564 820 1076 1332 1588 58 LFO 4 SHAPE 565 821 1077 1333 1589 59 LFO 4 AMT 566 822 1078 1334 1590 60 LFO 4 DEST 567 823 1079 1335 1591 61 LFO 4 SYNC 568 824 1080 1336 1592 62 ENV3 D...

Page 63: ...99 855 1111 1367 1623 90 VELOCITY DEST 600 856 1112 1368 1624 91 FOOT AMT 601 857 1113 1369 1625 92 FOOT DEST 602 858 1114 1370 1626 101 TEMPO 603 859 1115 1371 1627 102 TIME SIG 604 860 1116 1372 162...

Page 64: ...951 1192 1207 1448 1463 1704 1719 COMBO NAME 696 712 X X X X Sysex Messages Universal System Exclusive Message Device Inquiry Status Description 1111 0000 System Exclusive SysEx 0111 1110 Non realtim...

Page 65: ...ra ID 0000 0101 Request Program Transmit 0000 00vv Bank Number 0 1 0vvv vvvv Program Number 0 127 1111 0111 End of Exclusive EOX Tetra will respond by sending out the Program Data in the format descri...

Page 66: ...n 1111 0000 System Exclusive SysEx 0000 0001 DSI ID 0010 0110 Tetra ID 0010 0001 Request Combo Transmit 0vvv vvvv Combo Number 0 127 1111 0111 End of Exclusive EOX Tetra will respond by sending out th...

Page 67: ...Buffer Data Dump Status Description 1111 0000 System Exclusive SysEx 0000 0001 DSI ID 0010 0110 Tetra ID 0000 0011 Edit Buffer Data 0vvv vvvv 384 bytes expanded to 446 MIDI bytes in packed MS bit form...

Page 68: ...ve SysEx 0000 0001 DSI ID 0010 0110 Tetra ID 0000 1111 Main Parameter Data 0vvv vvvv 20 nibbles LS then MS for 10 Global parameters Global Parameters are listed starting on page 45 1111 0111 End of Ex...

Page 69: ...art 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 B...

Page 70: ...62 Hidden Functions Hold the ASSIGN PARAMETER switch and hit the Mode switch to calibrate the low pass filter and analog oscillator waveshapes This should not be necessary for normal operation...

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Page 72: ...Dave Smith Instruments 1210 Cabrillo Hwy N Half Moon Bay CA 94019 1449 USA www DaveSmithInstruments com...

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