AUDIOCTL(1)                OpenBSD Reference Manual                AUDIOCTL(1)

NAME
     audioctl - control audio device



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

DESCRIPTION
     The audioctl command displays or sets various audio system driver vari-
     ables.  If a list of variables is present on the command line, 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 vari-
     ables 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

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.

OpenBSD 2.6                       May 4, 1997                                1