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AUDIOCTL(1) NetBSD General Commands Manual AUDIOCTL(1)
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audioctl -- control audio device
audioctl [-d device] [-p channel] [-n] -a
audioctl [-d device] [-p channel] [-n] name ...
audioctl [-d device] [-p channel] [-n] -w name=value ...
The audioctl command displays or sets various audio system driver vari-
ables. 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 speci-
fied variables to the given values.
The -d flag can be used to give an alternative audio control device, the
default is /dev/audioctl0.
The -p flag can be used to give a virtual channel to control, the default
is a new channel.
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, for the channel 3 you can use
audioctl -p 3 -w play.sample_rate=11025
To set all of the play parameters for CD-quality audio, you can use
audioctl -p 3 -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 eventu-
audioplay(1), audiorecord(1), mixerctl(1), audio(4), sysctl(8)
The audioctl command first appeared in NetBSD 1.3.
NetBSD 8.1 January 27, 2002 NetBSD 8.1