mute — Mutes/unmutes new instances of a given instrument.
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.
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).
Here is an example of the mute opcode. It uses the file mute.csd.
Example 271. 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>