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MIDI Functions

The Multi-Timbre Mode
The Multi-Timbre mode is a special mode in which the PDP-400 voices can be independently controlled on different
MIDI channel numbers (1 through 15) by an external MIDI device. The Multi-Timbre mode is off when the power is
initially turned on.
The Multi-Timbre mode can be activated as follows:
ZHold [MIDI/TRANSPOSE] and press [GUITAR].
XRelease [MIDI/TRANSPOSE].
In this mode MIDI program change numbers received by the PDP-400 select the
corresponding PDP-400 voices — i.e. the same voices selected by the panel con-
trols. The DOC Common Voice Mode described on page 50 also allows multi-tim-
bre control of the PDP-400, but with different voice assignments.
Rhythm Instrument Note Assignments
The PDP-400’s rhythm instruments are controlled via MIDI channel 15. The note assignments for the various rhythm
instruments are given below:
Note
(MIDI Note No.)
Instrument
A1 (45) CYMBAL DAMP
F#2 (54) BRUSH ROLL
G#2 (56) HI-HAT CLOSED HEAVY
A#2 (58) CRASH CYMBAL LIGHT
B2 (59) BASS DRUM LIGHT
C3 (60)
SNARE DRUM + RIM HEAVY
C#3 (61) RIDE CYMBAL CUP
D3 (62)
SNARE DRUM + RIM LIGHT
F3 (65) BASS DRUM NORMAL
F#3 (66) RIM SHOT
G3 (67) SNARE DRUM HEAVY
G#3 (68) BRUSH SHOT
A3 (69) SNARE DRUM LIGHT
A#3 (70) HI-HAT PEDAL
B3 (71) SNARE DRUM ECHO
C4 (72) TOM 4
C#4 (73)
HI-HAT CLOSED NORMAL
Note
(MIDI Note No.)
Instrument
D4 (74) TOM 3
D#4 (75) HI-HAT OPEN
E4 (76) TOM 2
F4 (77) TOM 1
F#4 (78) RIDE CYMBAL NORMAL
G4 (79) ELECTRIC TOM 3
G#4 (80) CRASH CYMBAL
A4 (81) ELECTRIC TOM 2
A#4 (82)
CRASH CYMBAL NORMAL
B4 (83) ELECTRIC TOM 1
C5 (84) CONGA LOW
C#5 (85) CABASA
D5 (86) CONGA HIGH
D#5 (87) METRONOME
E5 (88) BONGO HIGH
F5 (89) TIMBALE LOW
Note
(MIDI Note No.)
Instrument
F#5 (90) CLAVES
G5 (91) TIMBALE HIGH
G#5 (92) CASTANETS
A5 (93) CUICA LOW
A#5 (94) COWBELL
B5 (95) CUICA HIGH
C6 (96) HAND CLAP
C#6 (97) AGOGO LOW
D#6 (99) AGOGO HIGH
E6 (100) BONGO LOW
F6 (101) CUICA LOW
F#6 (102) TAMBOURINE
G6 (103) CRASH CYMBAL
G#6 (104) TRIANGLE CLOSED
A6 (105) BRUSH ROLL
A#6 (106) TRIANGLE OPEN
= Multi-Timbre mode ON.
= Multi-Timbre mode OFF.
The Split Send Mode
In the split send mode notes played on the left-hand section of the keyboard (to the left of and including the split
point key — see “Changing the Split Point” on page 10) are transmitted on MIDI channel 2, while the upper keyboard
section transmits on the MIDI channel set using the Send Channel Select function described earlier. In this mode the left-
and right-hand sections of the keyboard can be used to play separate external keyboards or tone generators set to receive
on the appropriate channels. The Split Send Mode is automatically turned off when the power is initially turned on.
ZHold [MIDI/TRANSPOSE] and press [STRINGS].
XRelease [MIDI/TRANSPOSE].
= Split Send Mode ON.
= Split Send Mode OFF.
GUITAR
GUITAR
STRINGS
STRINGS