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NAME    [Toc]    [Back]

     audioctl - control audio device

SYNOPSIS    [Toc]    [Back]

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

DESCRIPTION    [Toc]    [Back]

     The audioctl command displays or sets various  audio  system
driver variables.
   If  a  list  of variables is present on the command
line, audioctl
     prints the current value of those variables for  the  specified device.  By
     default, audioctl operates on the /dev/audioctl device.

     The options are as follows:

     -a             Print  all device variables and their current

     -f file       Specify an alternative audio control device.

     -n            Suppress printing of the variable name.

     name=value    Attempt to set the specified variable name  to

ENVIRONMENT    [Toc]    [Back]

     AUDIOCTLDEVICE  Audio control device to use.

FILES    [Toc]    [Back]

     /dev/audioctl  default audio control device

EXAMPLES    [Toc]    [Back]

     To set the playing sampling rate to 11025 you can enter:

           $ audioctl play.sample_rate=11025

     Note  that  many  of the variables that can be inspected and
changed are reset
 when the /dev/audio device is opened.  This can be  circumvented like

           $  (cat  file.au;  audioctl  -f  /dev/audioctl  -a)  >
           $  (audioctl  -f  /dev/audioctl  blocksize=1024;   cat
file.au)                    > /dev/audio

SEE ALSO    [Toc]    [Back]

     aucat(1), cdio(1), mixerctl(1), audio(4), sysctl(8)

HISTORY    [Toc]    [Back]

     The audioctl command first appeared in NetBSD 1.3.

OpenBSD      3.6                            May      4,      1997
[ Back ]
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