outiat
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## outiat

outiat — Sends MIDI aftertouch messages at i-rate.

## Description

Sends MIDI aftertouch messages at i-rate.

## Syntax

    outiat ichn, ivalue, imin, imax

## Initialization

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))

## Performance

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.

## Examples

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

Example 706. Example of the outiat opcode.

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

    <CsoundSynthesizer>
    <CsOptions>
    ; 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
    </CsOptions>
    <CsInstruments>

    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

    endin
    </CsInstruments>
    <CsScore>
    f0 30 			;play for 30 seconds

    e
    </CsScore>
    </CsoundSynthesizer>

## See also

MIDI Message Output

## Credits

Author: Gabriel Maldonado
Italy

New in Csound version 3.47

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

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