outiat — Sends MIDI aftertouch messages at i-rate.


Sends MIDI aftertouch messages at i-rate.


outiat ichn, ivalue, imin, imax


ichn -- MIDI channel number (1-16)

ivalue -- floating point value

imin -- minimum floating point value (converted in MIDI integer value 0)

imax -- maximum floating point value (converted in MIDI integer value 127 (7 bit))


outiat (i-rate aftertouch output) sends aftertouch messages. It works only with MIDI instruments which recognize them. It can drive a different value of a parameter for each note currently active.

It can scale an i-value floating-point argument according to the imin and imax values. For example, set imin = 1.0 and imax = 2.0. When the ivalue argument receives a 2.0 value, the opcode will send a 127 value to the MIDI OUT device. When the ivalue argument receives a 1.0 value, it will send a 0 value. i-rate opcodes send their message once during instrument initialization.


Here is an example of the outiat opcode. It uses the file outiat.csd.

Example 720. Example of the outiat opcode.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

; Select audio/midi flags here according to platform
-odac -Q1 -M0  ;;;realtime audio out and midi in and out
;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
; For Non-realtime ouput leave only the line below:
; -o outiat.wav -W ;;; for file output any platform

sr = 44100
ksmps = 10
nchnls = 2

instr 1

ikey notnum 
ivel  veloc

ivib = 25		;low value.
outiat 1, ivib, 0, 127	;assign aftertouch on
print ivib		;external synth for example to
midion 1, ikey, ivel	;change depth of filter modulation

f0 30 			;play for 30 seconds


See also

MIDI Message Output


Author: Gabriel Maldonado

New in Csound version 3.47

Thanks goes to Rasmus Ekman for pointing out the correct MIDI channel and controller number ranges.