netbsd man page for audioctl

AUDIOCTL(1)						    BSD General Commands Manual 					       AUDIOCTL(1)

NAME
     audioctl -- control audio device

SYNOPSIS
     audioctl [-d device] [-n] -a
     audioctl [-d device] [-n] name ...
     audioctl [-d device] [-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 -d flag can be used to give an alternative audio control device, the default is /dev/audioctl0.

     The -n flag suppresses printing of the variable name.

ENVIRONMENT
     AUDIOCTLDEVICE  the audio control device to use.

FILES
     /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)

EXAMPLES
     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 circum-
     vented by using /dev/sound0 instead.

COMPATIBILITY
     The old -f flag is still supported.  This support will be removed eventually.

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

HISTORY
     The audioctl command first appeared in NetBSD 1.3.

BSD
								 January 27, 2002							       BSD