NAME
audioctl
—
control audio device
SYNOPSIS
audioctl |
[-n ] [-d
device] -a |
audioctl |
[-n ] [-d
device] name ... |
audioctl |
[-n ] [-d
device] -w
name=value ... |
DESCRIPTION
Theaudioctl
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
audioctl -w
play=44100,2,16,slinear_le
audioctl
are reset when
/dev/audio0 is opened. This can be circumvented 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.