AUDIOCTL(1)

NAME
audioctl - control audio device

SYNOPSIS
audioctl [-f file] [-n] -a
[-f file] [-n] name ...
[-f file] [-n] -w name=value ...

DESCRIPTION
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 -f flag can be used to give an alternative audio control device, the default is /dev/audioctl.

The -n flag suppresses printing of the variable name.

EXAMPLES
To set the playing sampling rate to 11025 you can enter
    audioctl -w play.sample_rate=11025
Note that many of the variables that can be inspected and changed with audioctl are reset when the device is opened. This can be circumvented like this
    (cat file.au; audioctl -f /dev/stdout -a) > /dev/audio
or
    (audioctl -f /dev/stdout -w blocksize=1024; cat file.au) > /dev/audio

FILES

/dev/audioctl
    audio control device

/etc/default/audioctl
    default configuration loaded at boot time if any (Debian centric)

ENVIRONMENT

AUDIOCTLDEVICE
    the audio control device to use.

SEE ALSO
mixerctl(1), audio(4), sysctl(8)

HISTORY
The audioctl command first appeared in NetBSD 1.3.