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AUDIOCTL(1) BSD General Commands Manual AUDIOCTL(1)
audioctl -- control audio device
audioctl [-d device] [-n] -a
audioctl [-d device] [-n] name ...
audioctl [-d device] [-n] -w name=value ...
The audioctl command displays or sets various audio system driver variables. If a list of
variables is present on the command line, then audioctl prints the current value of those
variables for the specified device. If the -a flag is specified, all variables for the
device are printed. If the -w flag is specified audioctl attempts to set the specified
variables to the given values.
The -d flag can be used to give an alternative audio control device, the default is
The -n flag suppresses printing of the variable name.
AUDIOCTLDEVICE the audio control device to use.
/dev/audio0 audio I/O device (resets on open)
/dev/audioctl0 audio control device
/dev/sound0 audio I/O device (does not reset on open)
To set the playing sampling rate to 11025, you can use
audioctl -w play.sample_rate=11025
To set all of the play parameters for CD-quality audio, you can use
audioctl -w play=44100,2,16,slinear_le
Note that many of the variables that can be inspected and changed with audioctl are reset
when /dev/audio0 is opened. This can be circumvented by using /dev/sound0 instead.
The old -f flag is still supported. This support will be removed eventually.
audioplay(1), audiorecord(1), mixerctl(1), audio(4), sysctl(8)
The audioctl command first appeared in NetBSD 1.3.
BSD January 27, 2002 BSD
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