outq
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## outq

outq — Writes 4-channel audio data to an external device or stream.

## Description

Writes 4-channel audio data to an external device or stream.

## Syntax

    outq asig1, asig2, asig3, asig4

## Performance

Sends 4-channel audio samples to an accumulating output buffer (created at the beginning of performance) which serves to collect the output of all active instruments before the sound is written to disk. There can be any number of these output units in an instrument.

The type (mono, stereo, quad, hex, or oct) should agree with nchnls. But as of version 3.50, Csound will attempt to change an incorrect opcode to agree with the nchnls statement. Opcodes can be chosen to direct sound to any particular channel: outs1 sends to stereo channel 1, outq3 to quad channel 3, etc.

## Examples

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

Example 721. Example of the outq 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    ;;;realtime audio out
    ;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
    ; For Non-realtime ouput leave only the line below:
    ; -o outq.wav -W ;;; for file output any platform
    </CsOptions>
    <CsInstruments>

    sr = 44100
    ksmps = 32
    nchnls = 4
    0dbfs  = 1

    instr 1

    asig vco2 .01, 110	; sawtooth waveform at low volume

    ;filter the first channel
    kcut1 line 60, p3, 300	; Vary cutoff frequency
    kresonance1 = 3
    inumlayer1 = 3
    asig1 lowresx asig, kcut1, kresonance1, inumlayer1

    ;filter the second channel
    kcut2 line 300, p3, 60	; Vary cutoff frequency
    kresonance2 = 3
    inumlayer2 = 3
    asig2 lowresx asig, kcut2, kresonance2, inumlayer2

    ;filter the third channel
    kcut3 line 30, p3, 100; Vary cutoff frequency
    kresonance3 = 6
    inumlayer3 = 3
    asig3 lowresx asig, kcut3, kresonance3, inumlayer3
    asig3 = asig3*.1	; lower volume

    ;filter the fourth channel
    kcut4 line 100, p3, 30; Vary cutoff frequency
    kresonance4 = 6
    inumlayer4 = 3
    asig4 lowresx asig, kcut4, kresonance4, inumlayer4
    asig4 = asig4*.1	; lower volume

          outq asig1, asig2, asig3, asig4; output channels 1, 2, 3 & 4

    endin
    </CsInstruments>
    <CsScore>

    i 1 0 5
    e
    </CsScore>
    </CsoundSynthesizer>

## See also

Signal Output

## Credits

Author: Barry L. Vercoe, Matt Ingalls/Mike Berry
MIT, Mills College
1993-1997

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