Lexicon PCM 80 - MIDI IMPLEMENTATION DETAILS Midi Implementation Manual
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Lexicon PCM 80 - MIDI IMPLEMENTATION DETAILS Midi Implementation Manual

Lexicon PCM 80 - MIDI IMPLEMENTATION DETAILS Midi Implementation Manual

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PCM 80
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Summary of Contents for Lexicon PCM 80 - MIDI IMPLEMENTATION DETAILS

  • Page 1 PCM 80 MIDI Implementation Details...
  • Page 2 © 1994, Lexicon, Inc. AllRights Reserved Lexicon, Inc. • 3 Oak Park • Bedford, MA 01730 USA • Tel 781=280-0300 • Fax 781-280-0490 Lexicon Part No. 070-10820 Printed in U.S.A.

  • Page 3: Table Of Contents

    Contents Program Change Messages ........1 Single Effect Message Format ......17 SysEx Automation ..........1 Effect Register Header Information ..... 17 Controller Automation ........1 Algorithm ID ............. 17 Reset All Controllers .......... 1 Position in Edit Matrix ........17 MIDI Clock and Clock Commands .....

  • Page 4: Program Change Messages

    CompuServe under section seven of the MIDI B forum. To access these documents: • Enter CompuServe, type GO MIDIBVEN • Select "section seven: Lexicon" • Enter the Lexicon library Program Change Messages Reception of MIDI Program Change and Bank Select messages can be selectively enabled/disabled from Control Mode parameter 3.0 MIDI Pgm Change, or via System Exclusive (sytem parameter 20).

  • Page 5: Controller Automation

    PCM 80 MIDI Implementation Details Lexicon Controller Automation For applications where it is desirable to “automate” changes made to PCM 80 effects with its own controls ( ADJUST knob, Foot Pedal , Footswitch 1 or Footswitch 2), we recommend assigning the controllers to MIDI destinations and recording the changes with a MIDI sequencer (see Control Mode parameter 3.5,...

  • Page 6: Sysex Implementation

    Lexicon PCM 80 MIDI Implementation Details SysEx Implementation There are two primary classes of SysEx messages: Requests and Dumps. The PCM-80 must be enabled for receipt of SysEx messages (Control mode 3.7) or incoming SysEx messages will be ignored. SysEx Header...

  • Page 7: Effect Bulk Data (Bank Dump)

    PCM 80 MIDI Implementation Details Lexicon Effect Bulk Data (Bank dump) This is a bidirectional dump which can be initiated from front-panel as a bank dump. Byte # ByteValue Description Header Effect bulk Data 0iii iiii Bank (source bank if sent by PCM 80. Target bank if received by...

  • Page 8: Bulk Chain

    Lexicon PCM 80 MIDI Implementation Details Bulk Chain This bidirectional dump describes a set of program chains (either the internal set of 10, or 10 from a card). This can be initiated from the front-panel as a bulk chain dump.

  • Page 9: Matrix

    PCM 80 MIDI Implementation Details Lexicon Matrix The matrix dump gives general information about the front-panel layout of the Edit, Control and Tempo modes, including row labels, etc. It does not give a full description of the various parameters assigned, since it is assumed that editing programs will manipulate parameters directly by ID.

  • Page 10: Parameter

    Lexicon PCM 80 MIDI Implementation Details Parameter This bidirectional message can be transmitted or received by a PCM-80. This is the message that is used when a PCM-80 is transmitting SysEx automation. There are three types of parameters: System, Patchable, and NonPatchable.

  • Page 11: Button

    PCM 80 MIDI Implementation Details Lexicon Button This is a bidirectional message. The following buttons are transmitted in SysEx automation mode: Compare, Tap, Bypass. Any button will be received, and PCM 80 response will be identical to front panel button press responses.

  • Page 12: Knob

    Lexicon PCM 80 MIDI Implementation Details This point packet is repeated 8 times... 0iii iiii Point Position (0-127). Positions should be in ascending order, and may not be duplicated. 0000 iiii Point Value LS nibble . The point value is independent of the specific parameter range.

  • Page 13: Parameter Specification

    PCM 80 MIDI Implementation Details Lexicon Parameter Specification PCM-80 to host only. This dump returns information about a specific parameter. It is provided for an editing program that doesn’t know the count, range or name of a parameter. Byte #...

  • Page 14: Save Current Edit Buffer

    Lexicon PCM 80 MIDI Implementation Details Save Current Edit Buffer Host to PCM-80 only. Current edit buffer is named and saved with this SysEx message. Byte # ByteValue Description Header 0x19 Save Code 0iii iiii Destination Bank 0iii iiii Destination Program...

  • Page 15: Data Request

    PCM 80 MIDI Implementation Details Lexicon Data Request Host to PCM-80 only. The host may request that a message be sent by the PCM-80. Byte # ByteValue Description Header 0x7F Data request 0iii iiii Type of data requested. This matches the message IDs described above, but not all messages may be requested.

  • Page 16: Patch Sources By Index

    Lexicon PCM 80 MIDI Implementation Details Patch sources by Index The following values allow sources to be selected for patches, for Tap sources, or for other control sources such as AR Source. SourceIndex Controller 0-30 MIDI controllers 1 - 31...

  • Page 17: System Parameters

    PCM 80 MIDI Implementation Details Lexicon System parameters These parameters are global (not part of a preset). Param# Description MaxValue Wordclock source Analog input level Digital input level MIDI Receive on/off/channel MIDI transmit on/off/channel External tap source see patch source list...

  • Page 18: Patchable Parameters

    Lexicon PCM 80 MIDI Implementation Details Patchable Parameters These are the patchable parameters that are the same (both offset and range) for all algorithms. Param# Description MaxValue Mix (when mix mode is PRG) LFO rate 2500 LFO waveform select LFO pulsewidth...

  • Page 19: Midi Inquiry Message

    0iii iiii Channel. Sysex device ID assigned to the PCM 80. 0x06 General information 0x02 Device id message 0x06 Lexicon sysex ID 0x00 Family code LSB 0x00 Family code MSB 0x07 Family member code LSB. This is the PCM 80 sysex product code (byte 3 of a standard sysex).

  • Page 20: Single Effect Message Format

    Lexicon PCM 80 MIDI Implementation Details Single Effect Message Format Bytes 8-879 of the System Exclusive Single Effect Message are described as “Nibbleized data”. The 872 nibbleized bytes, when reassembled make up 435 bytes that are the PCM 80 Effect Register and a 1-byte checksum.

  • Page 21: Bitpacking

    PCM 80 MIDI Implementation Details Lexicon Bitpacking General Bitpacking Method All PCM 80 effect control data fields are words from 1-16 bits in length utilizing the minimum number of bits necessary to represent the full range of the field. The values of these fields are packed into bytes right justified.

  • Page 22: Bitpack Data Groups

    Lexicon PCM 80 MIDI Implementation Details Bitpack Data Groups The bitpacked Effect Control Data contains five distinct groups of information pertaining to the effect: Soft Row Assignments Unpatchable Parameter Information ADJUST Knob Initial Value Patchable Parameter Information Patching Information The first three Bitpacked Effect Control Data Groups: Soft Row Assignments, Unpatchable Parameter Information, and ADJUST Knob Initial Value, are exactly the same for all algorithms.

  • Page 23: Adjust Knob Initial Value

    PCM 80 MIDI Implementation Details Lexicon ADJUST Knob Initial Value The ADJUST Knob Initial Value is a single 7-bit field which defines the value, 0-127, to which the ADJUST knob will be assigned when the effect register is loaded. Please note that the initial value of the knob ought to lie in the range defined by Controls ADJUST Low Limit and High Limit fields in the Unpatchable Parameter Information.

  • Page 24: Bitpack Field Interdependencies

    Lexicon PCM 80 MIDI Implementation Details If the Count of Patch Points is 0, the Patch Information Block will end with the above information. The Count of Patch Points can be anywhere from 0-8. For values 1-8, the patch’s information block will be filled out with the following sequence repeated for as many points as are defined.

  • Page 25: Plate Algorithm Patchable Parameter Information List

    PCM 80 MIDI Implementation Details Lexicon Plate Algorithm Patchable Parameter Information list Dest Dest Bits List ID Number Range Field Controls Controls FX ADJUST Controls InLvl L Controls InLvl R Controls InPan L Controls InPan R Controls High Cut Controls...

  • Page 26: Tempo Flag Fields

    Lexicon PCM 80 MIDI Implementation Details Dest Dest Bits List ID Number Range Field Feedback Voice4 Panning Master Panning Voice1 Panning Voice2 Panning Voice3 Panning Voice4 <Tempo Flag> 2500 MOD:LFO Rate MOD:LFO Shape MOD:LFO P Width MOD:LFO Depth MOD:AR Env...

  • Page 27: Dest List And Dest List Number

    PCM 80 MIDI Implementation Details Lexicon Dest List ID and Dest List Number The Patch Information Block has the following format: Bits Contents Patch Source Value Destination Patchable Parameter List ID Value Destination Patchable Parameter Number Value Count of Patch Points Value You will notice that the Plate Algorithm Patchable Parameter Information list contains columns Dest List ID and Dest Number for all the non-Tempo fields.
  • Page 28 Lexicon PCM 80 MIDI Implementation Details We want to patch to the Rvb Time Pre Delay. The Tempo Flag bit field preceding the Rvb Time Pre Delay parameter field in the Patchable Parameter Information list is assigned a 0 to indicate that the Pre Delay parameter is in standard form.
  • Page 29 PCM 80 MIDI Implementation Details Lexicon Patching a long delay time parameter to milliseconds Here is some information from the Glide>Hall Algorithm Patchable Parameter Information list, found earlier in this document. Dest Dest Bits List ID Number Range Parameter <Tempo Flag>...
  • Page 30 Lexicon PCM 80 MIDI Implementation Details Patching a long delay time parameter to Tempo We want to patch to the DelayTime Voice1 again. The Tempo Flag field bit preceding the DelayTime Voice1 parameter field in the Patchable Parameter Information list is assigned a 1 to indicate that the parameter is in Tempo form.

  • Page 31: Parsing Prime Blue

    PCM 80 MIDI Implementation Details Lexicon Parsing Prime Blue The first effect preset register in the PCM80 is Prime Blue. A hex dump of the 435-byte effect register for Prime Blue follows: d2 00 07 f0 50 72 69 6d 65 20 42 6c 75 65 20 20...
  • Page 32 Lexicon PCM 80 MIDI Implementation Details The hex dump for Prime Blue is first broken down into 7 primary groups of data: Number of valid bytes d2 00 Algorithm Id Last Edit Matrix Position Name of register 50 72 69 6d 65 20 42 6c 75 65 20 20...
  • Page 33 PCM 80 MIDI Implementation Details Lexicon Conveniently, the first 10 bytes of the bitpack information is 10 8-bit fields for the 10 soft row positions. Therefore, 00 03 05 11 13 14 20 50 80 85 tells us that the 10 soft row parameters are taken from...
  • Page 34 Lexicon PCM 80 MIDI Implementation Details The full annotated dump of Prime Blue looks like this: Algorithm : Chorus+Rvb Register name : Prime Blue Knob name : Efx/Rvb X Edit position : Soft Row, Slot 0 Soft Row Assignments Tempo...
  • Page 35 PCM 80 MIDI Implementation Details Lexicon Chorus V5 Depth 12 ms Chorus V5 Rate 2.05 Hz Chorus V6 Depth 20 ms Chorus V6 Rate 1.90 Hz Feedback Master 100% Feedback Voice1 -13% Feedback Voice2 +29% Feedback Voice3 -13% Feedback Voice4...

  • Page 36: Summary Of Effect Register Format

    Lexicon PCM 80 MIDI Implementation Details Summary of Effect Register Format Nibbleized data bytes (872 bytes) Effect Register (435 bytes) Count of valid bytes (n) in the register (2 bytes) Algorithm Id (1 byte) Position in Edit Matrix (1 byte)

  • Page 37: Patch Sources

    PCM 80 MIDI Implementation Details Lexicon Patch Sources Patch Source Patch Source Patch Source (001) Mod Wheel (052) Ctl 52 (102) Ctl 102 (002) Breath (053) Ctl 53 (103) Ctl 103 (003) Ctl 3 (054) Ctl 54 (104) Ctl 104...

  • Page 38: Patchable Parameter Information For All Algorithms

    Lexicon PCM 80 MIDI Implementation Details Patchable Parameter Information for All Algorithms Plate Algorithm Patchable Parameter Bitpack Information Dest Dest Range Bits List ID Number Range Field Decode Controls Controls FX ADJUST Controls InLvl L Controls InLvl R Controls InPan L...

  • Page 39: Chamber Algorithm

    PCM 80 MIDI Implementation Details Lexicon Panning Voice4 <Tempo Flag> 2500 MOD:LFO Rate MOD:LFO Shape MOD:LFO P Width MOD:LFO Depth MOD:AR Env Attack MOD:AR Env Release MOD:AR Env Mode MOD:Env L Release MOD:Env R Release <Tempo Flag> 2500 MOD:Sw 1...

  • Page 40: Infinite Algorithm

    Lexicon PCM 80 MIDI Implementation Details Levels Voice4 DelayTime Master DelayTime GldResp 1365 DelayTime GldRange DelayTime Clear <Tempo Flag> 1365 DelayTime Voice1 <Tempo Flag> 1365 DelayTime Voice2 <Tempo Flag> 1365 DelayTime Voice3 <Tempo Flag> 1365 DelayTime Voice4 Feedback Master Feedback...

  • Page 41: Inverse Algorithm

    PCM 80 MIDI Implementation Details Lexicon Rvb Time EkoFbk R <Tempo Flag> Rvb Time EkoDly R Rvb Time PstMix <Tempo Flag> 1365 Rvb Time PstDly L <Tempo Flag> 1365 Rvb Time PstDly R Rvb Time GldResp 1365 Rvb Time GldRange...
  • Page 42 Lexicon PCM 80 MIDI Implementation Details Controls InPan L Controls InPan R Controls High Cut Controls Voice Dif Controls FX Mix Controls FX Width Rvb Time Low Slope Rvb Time Mid Slope Rvb Time Crossover Rvb Time Rt HC <Tempo Flag>...

  • Page 43: Concert Hall Algorithm

    PCM 80 MIDI Implementation Details Lexicon Concert Hall Algorithm Patchable Parameter Bitpack Information Dest Dest Range Bits List ID Number Range Field Decode Controls Controls FXADJUST Controls InLvlL Controls InLvlR Controls InPanL Controls InPanR Controls HighCut Controls VoiceDif Controls FXMix...

  • Page 44: M-Band + Rvb Algorithm

    Lexicon PCM 80 MIDI Implementation Details MOD:AREnv Release MOD:AREnv Mode MOD:EnvL Release MOD:EnvR Release <TempoFlag> 2500 MOD:Sw1 Rate MOD:Sw1 PWidth MOD:Sw1 Mode <TempoFlag> 2500 MOD:Sw2 Rate MOD:Sw2 PWidth MOD:Sw2 Mode M-Band+Rvb Algorithm Patchable Parameter Bitpack Information Dest Dest Range Bits...

  • Page 45: Glide>Hall Algorithm

    PCM 80 MIDI Implementation Details Lexicon Filters Mstr HC Filters Mstr LC Filters V1 HiCut Filters V1 LoCut Filters V2 HiCut Filters V2 LoCut Filters V3 HiCut Filters V3 LoCut Filters V4 HiCut Filters V4 LoCut Filters V5 HiCut Filters...
  • Page 46 Lexicon PCM 80 MIDI Implementation Details RvbDesign Size RvbDesign Diffusion RvbDesign RvbDesign Depth RvbDesign Spin RvbDesign Chorus RvbDesign Link RvbDesign Rvb In RvbDesign Rvb Out Glide FX Gld Lvl Glide FX A Lvl L Glide FX A Dly L Glide FX...

  • Page 47: Chorus+Rvb Algorithm

    PCM 80 MIDI Implementation Details Lexicon <Tempo Flag> 2500 MOD:Sw 2 Rate MOD:Sw 2 P Width MOD:Sw 2 Mode Chorus+Rvb Algorithm Patchable Parameter Bitpack Information Dest Dest Range Bits List ID Number Range Field Decode Controls Controls FX ADJUST Controls...

  • Page 48: Res1>Plate Algorithm

    Lexicon PCM 80 MIDI Implementation Details 16000 Chorus V3 Depth Chorus V3 Rate 16000 Chorus V4 Depth Chorus V4 Rate 16000 Chorus V5 Depth Chorus V5 Rate 16000 Chorus V6 Depth Chorus V6 Rate Feedback Master Feedback Voice1 Feedback Voice2...
  • Page 49 PCM 80 MIDI Implementation Details Lexicon RvbDesign Size RvbDesign Diffusion RvbDesign Attack RvbDesign Spin RvbDesign Link RvbDesign Rvb In RvbDesign Rvb Out Levels Mstr Lvl Levels Mstr Fbk Levels V1 Lvl Levels V1 Fbk Levels V2 Lvl Levels V2 Fbk...

  • Page 50: Res2>Plate Algorithm

    Lexicon PCM 80 MIDI Implementation Details Res2>Plate Algorithm Patchable Parameter Bitpack Information Dest Dest Range Bits List ID Number Range Field Decode Controls Controls FX ADJUST Controls InLvl L Controls InLvl R Controls InPan L Controls InPan R Controls FX Mix...
  • Page 51 PCM 80 MIDI Implementation Details Lexicon Resonance V5 HiCut Resonance V6 Res Resonance V6 HiCut Pitch Assign Pitch Tuning Pitch Active Pitch Pitch Scale Pitch Root Pitch Rule Pitch Voice1 Pitch Voice2 Pitch Voice3 Pitch Voice4 Pitch Voice5 Pitch Voice6...

  • Page 52: Unpatchable And Patchable Parameter Range Decode

    Lexicon PCM 80 MIDI Implementation Details Unpatchable and Patchable Parameter Range Decode To elliminate excessive repetition unpatchable and patchable parameters are given “range decode” numbers. These numbers can be used to reference this list for the key to decoding the parameter in its useful range.
  • Page 53 PCM 80 MIDI Implementation Details Lexicon Range Decode 11 Full range and phase level gain control. The value is used as a lookup to the following 161 level and phase assignments. Phase Inverted (80 values) +0db -1db, -2db, -3db, -4db, -5db, -6db, -7db, -8db, -9db, -10db, -db, -12db, -13db, -14db,...
  • Page 54 Lexicon PCM 80 MIDI Implementation Details Range Decode 16 Mid Rt. The value to display translation for Range Decode 16 Mid Rt (and for Range Decode 29 Spread) is not straightforward because it is dependent on the values of the RvbDesign Link and RvbDesign Size parameters.
  • Page 55 PCM 80 MIDI Implementation Details Lexicon Range Decode 22 The value is used as a lookup to the following valid gain assignments. Off, -24.0db, -18.0db, -14.5db, -12.0db, -10.1db, -8.5db, -7.2db, -6.0db, -5.0db, -4.0db, -3.3db, -2.5db, -1.8db, -1.0db, Full Range Decode 23 The value is used as a lookup to the following percent assignments.
  • Page 56 Lexicon PCM 80 MIDI Implementation Details Range Decode 33 Master level. The parameter always has a range of 80. The values display as -40db through +0db to +40db in 1db increments. Range Decode 34 Bipolar percent. The parameter always has a range of 200 which maps to the display values -100% through 0% to 100%.
  • Page 57 PCM 80 MIDI Implementation Details Lexicon Range Decode 45 Pitch assignement. The parameter is always 0-127, and maps to note assignments C0-G10. Range Decode 46 Pitch tuning. The parameter always has a range of 200 and maps to the A440 tuning frequencies 430.0- 450.0 Hz in 0.1 Hz increments.

  • Page 58: Annotated Dump Of Selected Presets

    Lexicon PCM 80 MIDI Implementation Details Annotated dump of selected presets Annotated dump of FSw2 Elevate Algorithm : Plate Register name : FSw2 Elevate Knob name: Feedback Edit position : Soft Row, Slot 0 Soft Row 0.0 0.3 0.4 0.5 0.6 4.0 5.0...
  • Page 59 PCM 80 MIDI Implementation Details Lexicon Feedback Master Feedback Voice1 -90% Feedback Voice2 Feedback Voice3 -90% Feedback Voice4 Panning Master Panning Voice1 50 L Panning Voice2 50 L Panning Voice3 50 R Panning Voice4 50 R MOD:LFO Rate 0.10 Hz...

  • Page 60: Randomimages

    Lexicon PCM 80 MIDI Implementation Details Annotated dump of RandomImages Effect Algorithm: Chorus+Rvb Register name : RandomImages Knob name : ImageKnob Edit position : Soft Row, Slot 0 Soft Row 6.0 0.4 2.0 4.0 Unassigned 5 slots Tempo Rate 120 BPM...
  • Page 61 PCM 80 MIDI Implementation Details Lexicon Chorus V4 Depth 28 ms Chorus V4 Rate 0.60 Hz Chorus V5 Depth 38 ms Chorus V5 Rate 0.64 Hz Chorus V6 Depth 26 ms Chorus V6 Rate 0.74 Hz Feedback Master Feedback Voice1...

  • Page 62: Superball

    Lexicon PCM 80 MIDI Implementation Details Patch 9 Source Int ADJUST Dest DelayTime Master 200% Annotated dump of Super Ball! Effect Algorithm : Glide>Hall Register name : Super Ball! Knob name: Bounce It Edit position : Soft Row, Slot 0...

  • Page 63: Midi Implementation Chart

    PCM 80 MIDI Implementation Details Lexicon Glide FX X-Fbk R Levels Master +0 dB Levels Voice1 Full Levels Voice2 Levels Voice3 Levels Voice4 Full Levels Voice5 Levels Voice6 DelayTime Master 100% DelayTime Clear DelayTime Voice1 2: 1 Echo:Beat DelayTime oice2...
  • Page 64 Lexicon PCM 80 MIDI Implementation Details MIDI Implementation Chart Lexicon PCM 80 Digital Effects System Function Transmitted Recognized Remarks Basic Default Channel Changed 1-16 1-16 Mode Default Mode 1, 3 Messages Altered Note 0-127 Last Note, Low Note, Number High Note used as...
  • Page 65 PCM 80 MIDI Implementation Details Lexicon...
  • Page 66 Lexicon, Inc. 3 Oak Park Bedford, MA 01730 Tel 781-280-0300 Fax 781-280-0490 www.lexicon.com Lexicon Part No. 070-10820 Printed in U.S.A.

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