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DTX400K/DTX430K/DTX450K MIDI Reference
MIDI Reference Material
MIDI Data Format
1 General
1.1 Scope
The specifications described herein apply to transmission and recep-
tion of MIDI data by a DTX400K, DTX430K, or DTX450K drum mod-
ule.
1.2 Compliance
• The specifications described herein comply with the MIDI 1.0 stan-
dard.
1.3 Legend
The following symbol has a special meaning herein.
• $: Placed in front of hexadecimal numbers.
2 Channel Messages
2.1 Key On & Key Off
Key On and Key Off messages are transmitted and received.
• Range of notes received: 0 (C-2) to 127 (G8)
• Velocity range: 1 to 127 (i.e., Note On only)
2.2 Control Change
The drum module’s sequencer can play back all varieties of Control
Change message; accordingly, the drum module can transmit all such
messages. Details pertaining to the internal tone generator and drum
trigger function are described below.
2.2.1 Bank Select MSB (0), LSB (32)
Bank Select MSB and LSB messages are received but not trans-
mitted.
MSB = 0, LSB = any value: General MIDI instrument voices
MSB = 127, LSB = any value: General MIDI drum voices (see Note 1)
MSB = 125, LSB = 1: Drum kits (see Note 2)
* Note 1: General MIDI drum voices
Only program number 1 is received, and the corresponding
General MIDI preset kit is selected. Playback parts do not
change.
* Note 2: Drum voices, Preset kits
The drum kit having the same number as the received program
number is selected.
Any changes made to the drum module’s drum kits will have no
effect on drum kits selected via MIDI.
2.2.2 Modulation (1)
Modulation messages are received but not transmitted.
2.2.3 Foot Controller (4)
Foot Controller messages are transmitted and received.
2.2.4 Portamento Time (5)
Portamento Time messages are received but not transmitted.
2.2.5 Data Entry (MSB = 6, LSB = 38)
Data Entry messages are received but not transmitted. These
messages are used to specify RPN data.
2.2.6 Main Volume (7)
Main Volume messages are received but not transmitted.
2.2.7 Pan (10)
Pan messages are received but not transmitted. A value of 0 cor-
responds to the far left of the stereo image; a value of 127, to the
far right.
2.2.8 Expression (11)
Expression messages are received but not transmitted.
2.2.9 Hold 1 (64)
Hold 1 messages are received but not transmitted.
2.2.10 Portamento Switch (65)
Portamento Switch messages are received but not transmitted.
2.2.11 Sostenuto (66)
Sostenuto messages are received but not transmitted.
2.2.12 Harmonic Content (71)
Harmonic Content messages are received but not transmitted.
2.2.13 EG Release Time (72)
EG Release Time messages are received but not transmitted.
2.2.14 EG Attack Time (73)
EG Attack Time messages are received but not transmitted.
2.2.15 Brightness (74)
Brightness messages are received but not transmitted.
2.2.16 Effect 1 Depth (91)
Effect 1 Depth messages are received but not transmitted. The
message value corresponds to the Reverb Send level.
2.2.17 Data Increment (96), Decrement (97)
Data Increment and Decrement messages are received but not
transmitted.
2.2.18 RPN
$00/$00 Pitch bend sensitivity:
Received but not transmitted.
$00/$01 Fine tuning:
Received but not transmitted. Has no effect on drum parts.
$00/$02 Coarse tuning:
Received but not transmitted. Has no effect on drum parts.
$7f/$7f NULL:
Received but not transmitted.
2.3 Channel Mode
All types of Channel Mode message are received, but none are trans-
mitted.
2.3.1 All Sound Off (120)
Upon receipt of an All Sound Off message, the drum module
mutes all voices currently playing on the corresponding channel.
2.3.2 Reset All Controllers (121)
Upon receipt of a Reset All Controllers message, the drum mod-
ule resets the following controllers to their initial values:
Pitch Bend, Modulation, Expression, Hold 1, Sostenuto, and RPN
number.
2.3.3 All Note Off (123)
Upon receipt of an All Note Off message, the drum module mutes
all notes currently playing on the corresponding channel. If Hold 1
or Sostenuto is turned on, however, muting will not take place
until said controller is turned off.
2.3.4 Omni Off (124)
Upon receipt of an Omni Off message, the drum module acts in
the same way as if an All Notes Off message had been received.
