| AUDIOCTL(1) | 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 circumvented by using 
/dev/sound0 instead.
 
COMPATIBILITY
 The old -f flag is still supported. This support will be removed eventually.
HISTORY
 The audioctl command first appeared in NetBSD 1.3.