mute
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## mute

mute — Mutes/unmutes new instances of a given instrument.

## Description

Mutes/unmutes new instances of a given instrument.

## Syntax

    mute insnum [, iswitch]

    mute "insname" [, iswitch]

## Initialization

insnum -- instrument number. Equivalent to p1 in a score i statement.

“insname” -- A string (in double-quotes) representing a named instrument.

iswitch (optional, default=0) -- represents a switch to mute/unmute an instrument. A value of 0 will mute new instances of an instrument, other values will unmute them. The default value is 0.

## Performance

All new instances of instrument inst will me muted (iswitch = 0) or unmuted (iswitch not equal to 0). There is no difficulty with muting muted instruments or unmuting unmuted instruments. The mechanism is the same as used by the score q statement. For example, it is possible to mute in the score and unmute in some instrument.

Muting/Unmuting is indicated by a message (depending on message level).

## Examples

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

Example 310. Example of the mute 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
    ; Audio out   Audio in    No messages
    -odac           -iadc     -d     ;;;RT audio I/O
    ; For Non-realtime ouput leave only the line below:
    ; -o mute.wav -W ;;; for file output any platform
    </CsOptions>
    <CsInstruments>

    ; Initialize the global variables.
    sr = 44100
    kr = 4410
    ksmps = 10
    nchnls = 1

    ; Mute Instrument #2.
    mute 2

    ; Instrument #1.
    instr 1
      a1 oscils 10000, 440, 0
      out a1
    endin

    ; Instrument #2.
    instr 2
      a1 oscils 10000, 880, 0
      out a1
    endin

    </CsInstruments>
    <CsScore>

    ; Play Instrument #1 for one second.
    i 1 0 1
    ; Play Instrument #2 for one second.
    i 2 0 1
    e

    </CsScore>
    </CsoundSynthesizer>

## Credits

Example written by Kevin Conder.

New in version 4.22

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