Sequential DRUMTRAKS 400 Manual
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Sequential DRUMTRAKS 400 Manual

Sequential DRUMTRAKS 400 Manual

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  • Page 2 SEQUENTIAL MG40AA Publications Department January, 1985 MODEL 400 DRUMTRAKS MIDIGUIDE ©1985 by SEQUENTIAL All rights reserved. New layout, edited and reprinted 2010 on VINTAGE PLANET...

  • Page 4: Table Of Contents

    SEQUENTIAL MG40AA Publications Department January, 1985 MODEL 400 DRUMTRAKS MIDIGUIDE page 1 INTRODUCTION 2 STANDARD VERSION 0_4 POWER-ON DEFAULT CONDITIONS HIDDEN FUNCTIONS MIDI IMPLEMENTATION (0_4) Table 2.1 MIDI Key Assignment Figure 2.1 MIDI Drum Key Assignment Table 2.2 Data Dump Format Table 2.3 Song Pointers...

  • Page 5: Introduction

    0_5 allows Drumtraks’ volumes and tunings to be programmed from MIDI-equiped keyboards using the PITCH and MOD Wheels, or with a new "pitch key" system. 0_5 is a software option, and must be purchased through Sequential or any authorized Sequential service center.

  • Page 6: Standard Version 0_4

    STANDARD VERSION 0_4 Released in May, 1984, the 0_4 software adds the following features to the Drumtraks: CLK OUT is enabled during pattern recording. CLK IN can be used during recording. Clock Out is active during CLK IN. MIDI Mode 1 can be selected from the front panel. MIDI Mode 3 can be selected from the front panel.

  • Page 7: Hidden Functions

    "HIDDEN" FUNCTIONS ( Software version 0_4 ) * Clear All Memory Hold [7], [8], [9], [INC], [DEC], [FASTER] and [SLOWER]. * Enable External Clock Input Hold both [TEMPO] switches. Press [ENTER]. This selects 24 ppq clock input rate, lighting the far right decimal point. If desired, press [DEC] once for 48 ppq, or twice for 96 ppq.
  • Page 8 * Disable "Pads Out" Hold [ENTER]. Press 5. * Select MIDI Mode 1 (OMNI On/MONO Off) Hold [ENTER]. Press 6. When in Mode 1, the Drumtraks transmits Note On/Off data on the Basic Channel, and receives MIDI data from all 16 channels. * Select MIDI Mode 3 (OMNI Off/MONO Off) Hold [ENTER].

  • Page 9: Midi Implementation

    MIDI IMPLEMENTATION (VERSION 0_4) May, 1984 Unless otherwise specified, status/data bytes are given in hex and binary. TRANSMITTED DATA Status Second Third Fourth Fifth Sixth NOTE ON - only sent when “Pads Out” is enabled (see page 4). 1001 nnnn 0kkk kkkk 0vvv vvvv 0kkk kkkk...
  • Page 10 Status Second Third Fourth Fifth Sixth PROGRAM DUMP 1111 0000 0000 0001 0000 0110 Data 1111 0111 (SYSEX SCI ID 400 ID EOX) Data is 7680 song and pattern data bytes, formatted as 15,360 four-bit nibbles, right justified, LS nibble sent first.
  • Page 11 Status Second Third Fourth Fifth Sixth OMNI MODE ON 1111 nnnn 0111 1101 0000 0000 Mono Mode is always off, so when Omni Mode On is received, Mode 1 (Omni On/Mono Off) is selected. OMNI MODE Off 1111 nnnn 0111 1100 0000 0000 When received, Mode 3 (Omni Off/Mono Off) is selected.
  • Page 12 TABLE 2.1 MIDI KEY ASSIGNMENTS Instrument keys are numbered 23H-3AH. For reference, 3CH = middle C Key Value Instrument 23H, 24H BASS 26H, 28H SNARE CLAPS 29H, 2BH TOM 1 2AH, 2CH CLOSED HI-HAT 2DH, 2FH TOM 2 OPEN HI-HAT CRASH CYMBAL RIDE CYMBAL TAMBOURINE...
  • Page 13 TABLE 2.2 400 DATA DUMP FORMAT Bytes (Hex) Description 00H – C7H Song Pointers (see Table 2.3) C8H – 18FH Pattern Pointers (see Table 2.4) 190H – 191H Pointer to Space After Song 99 192H – N Song Data (see Table 2.5) N+1 –...
  • Page 14 TABLE 2.4 PATTERN POINTERS Bytes (Hex) Description C8H – C9H Pointer to Pattern 00. Pointer is stored in LS - then - MS format. CAH – CBH Pointer to Pattern 01. “ “ 18EH – 18FH Pointer to Pattern 99. TABLE 2.5 SONG DATA Relative Byte Number...
  • Page 15 TABLE 2.6 PATTERN DATA Relative Byte Number Byte Description nnn nnnn N = 01H-63H (1-99 decimal) Number of beats per measure (“numerator” of time signature) sss eeee E=0-9, Error Correct (see Table 2.7) S=0-5, Swing (see Table 2.7) mmm mmmm M= 00H-63H (1-99 decimal) Number of measures D = 0-7, beat value (see Table 2.7)
  • Page 16 TABLE 2.7 MISCELLANEOUS PARAMETER TABLES ERROR CORRECT Value Note 1/12 1/16 1/24 1/32 1/48 1/96 SWING Value BEAT NOTE (denominator) Value Note 1/12 1/16 1/24 1/32 DRUM NUMBER Number Drum BASS SNARE TOM 1 TOM2 CRASH CYMBAL RIDE CYMBAL CLOSED HI-HAT OPEN HI-HAT CLAPS TAMBOURINE...

  • Page 17: Optional Version

    OPTIONAL VERSION 0_5 Standard software versions 0_3 and 0_4 allowed drum patterns to be programmed from an external MIDI-equipped keyboard. If the keyboard was velocity sensitive, the volumes of each of the drum sounds were controlled by the velocity with which each “drum key”...

  • Page 18: Power-On Default Conditions

    POWER-ON DEFAULT CONDITIONS When the Drumtraks power is switched on, the Drumtraks is in MIDI Mode 1 (OMNI On, MONO Off). The Basic Channel remains where it was last set, unaffected by the power being switched off (Drumtraks are set to Channel 13 at the Factory).
  • Page 19 If "Pads Out" is enabled and drums are played, either manually or during pattern playback, "note on" and "note off" MIDI data is transmitted on the Basic Channel. If another Drumtraks receives this data, it plays the same drums. If, on the other hand, a synthesizer receives this data, it plays notes corresponding to the drums played.

  • Page 20: Programming Drum Tunings

    PROGRAMMING DRUM TUNINGS In previous software versions, a velocity sensitive MIDI keyboard could be used to program drum dynamics, to give the Drumtraks patterns a “human feel”. Tom rolls and other effects requiring multiple tunings, required “tuning overdubs” and took a considerable time to accomplish. The 0_5 software introduces three new techniques which makes pattern recording much easier via MIDI.

  • Page 21: Pitch Wheel

    Pitch Wheel while holding one of the standard drum keys in the keyboard’s lower octaves. If necessary, enable your keyboard’s wheels over MIDI (see your Sequential instrument’s MIDI GUIDE or operation manual). Play the drum keys on your keyboard. If the Drumtraks produces no sound:...

  • Page 22: Programming Drum Volumes With Mod Wheel

    MOD Wheel. This is an alternative for owners of non-velocity-sensitive instruments. If necessary, enable your keyboard’s wheels over MIDI (see your Sequential instrument’s MIDI GUIDE or operation manual). Play the drum keys on your keyboard. If the Drumtraks produces no sound:...

  • Page 23: Midi Implementation

    MIDI IMPLEMENTATION (VERSION 0_5) January, 1985 Unless otherwise specified, status/data bytes are given in hex and binary, while numbers in descriptions are in decimal. TRANSMITTED DATA Status Second Third Fourth Fifth NOTE ON (only sent when “Pads Out” is enabled - see page 15). 1001 nnnn 0ppp pppp 0100 0000...
  • Page 24 TRANSMITTED DATA Status Second Third Fourth Fifth TIMING CLOCK 1111 1000 During playback of any song or pattern, this is sent at a 24-per-quarter-note rate. Not sent when the external clock input is enabled. PATTERN MARKER 1111 0000 0000 0001 0111 1111 1111 0111 (SYS EX...
  • Page 25 REGOGNIZED RECEIVED DATA Status Second Third Fourth Fifth NOTE ON (including tuning information). 1001 nnnn 0ppp pppp 0100 0000 0kkk kkkk ovvv vvvv Pitch Key On P=41H-554H. For Pitch Key assignment, see Table 3.2, page 25 “Dummy” velocity byte Drum Key On. K=23h-3AH. For key values, see table 3.1, page 25).
  • Page 26 REGOGNIZED RECEIVED DATA Status Second Third Fourth Fifth SONG SELECT 1111 0011 0sss ssss S=00H-62H (0-98 decimal) Switches to song mode and selects song # (must be 00H-62H). Also must already be in either song stop or pattern stop modes. START 1111 1010 Only if in song mode, this starts playback from start of current song.
  • Page 27 REGOGNIZED RECEIVED DATA Status Second Third Fourth Fifth MOD WHEEL CHANGE 1011 nnnn 0000 0001 000m mmmm Successive MOD wheel changes can be received without repeating the status byte PITCH WHEEL CHANGE 1110 nnnn 0vvv vvvv 0vvv vvvv LS byte MS byte Successive PITCH wheel changes can be received without repeating the status byte.
  • Page 28 TABLE 3.1 MIDI DRUM KEY ASSIGNMENT Key number Instrument B, C 0 23H, 24H BASS C# 0 D 0 , E 0 26H, 28H SNARE D# 0 CLAPS F 0 , G 0 29H, 2BH TOM 1 F# 0 , G# 0 2AH, 2CH CLOSED HI-HAT A 0 , B 0...
  • Page 29 TABLE 3.3 400 DATA DUMP FORMAT Bytes (Hex) Description 00H – C7H Song Pointers (see Table 3.4) C8H – 18FH Pattern Pointers (see Table 3.5) 190H – 191H Pointer to Space After Song 99 192H – N Song Data (see Table 3.6) N+1 –...
  • Page 30 TABLE 3.6 SONG DATA Relative Byte Number Byte Description 0ttt tttt 00H-7FH - initial absolute tempo for this song. 1000 0000 No initial tempo steps 0ppp pppp Pattern number P=00H-63H(0-99 decimal) 1000 vvvv V=0H-FH - relative volume decrease 1001 vvvv V=0H-FH - relative volume inecrease 1010 tttt T=0H-FH - relative tempo decrease...
  • Page 31 TABLE 3.7 PATTERN DATA Relative Byte Number Byte Description nnn nnnn N = 01H-63H (1-99 decimal) Number of beats per measure (“numerator” of time signature) sss eeee E=0-9, Error Correct (see Table 3.8) S=0-5, Swing (see Table 3.8) mmm mmmm M= 00H-63H (1-99) decimal) Number of measures D = 0-7, beat value (see Table 3.8)
  • Page 32 TABLE 2.7 MISCELLANEOUS PARAMETER TABLES ERROR CORRECT Value Note 1/12 1/16 1/24 1/32 1/48 1/96 SWING Value BEAT NOTE (denominator) Value Note 1/12 1/16 1/24 1/32 DRUM NUMBER Number Drum BASS SNARE TOM 1 TOM2 CRSH CYMBAL RIDE CYMBAL CLOSED HI-HAT OPEN HI-HAT CLAPS TAMB...

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