mixerctl man page on OpenBSD

Man page or keyword search:  
man Server   11362 pages
apropos Keyword Search (all sections)
Output format
OpenBSD logo
[printable version]

MIXERCTL(1)		   OpenBSD Reference Manual		   MIXERCTL(1)

     mixerctl - control audio mixing

     mixerctl [-anv] [-f file]
     mixerctl [-nv] [-f file] name ...
     mixerctl [-qt] [-f file] name ...
     mixerctl [-q] [-f file] name=value ...

     The mixerctl command displays or sets various audio system mixing
     variables.	 If a list of variables is present on the command line,
     mixerctl prints the current value of those variables for the specified
     device.  Variables can also be set at system startup using the
     configuration file mixerctl.conf(5).

     The options are as follows:

     -a	      Print all device variables and their current values.  This is
	      the default, if no parameters are given to mixerctl.

     -f file  Specify an alternative audio mixing device.  The default is

     -n	      Suppress printing of the variable name.

     -q	      Suppress all printing when setting a variable.

     -t	      Toggle.  Attempt to select the next possible value of an enum
	      (see below).

     -v	      Show all possible values of variables.  Enum values are shown in
	      `[]' and values belonging to a set are shown in `{}' (see

	      Attempt to set the specified variable name to value.

     The exact set of controls that can be manipulated depends on the mixer.
     The general format (in both getting and setting a value) is:


     The class can have values like ``inputs'' or ``outputs'', indicating that
     the control affects the input or output, respectively, to the mixer.  The
     name indicates what part of the mixer the control affects.	 Continuous
     mixer values, e.g. volume, have numeric values in the range 0-255.	 If
     value can be set for each channel independently, the values are printed
     separated by commas.  Discrete mixer values, e.g. the recording source,
     have symbolic names.

     Variables may take one of three types, again dependent on the mixer:

     1.	  Enums.  These may take only one out of a possible list of symbolic
	  values or the literal string ``toggle'', which toggles the value,
	  e.g. inputs.mic.source=mic0.

     2.	  Sets.	 These can take one or more of a possible list of symbolic
	  values; multiple values are specified as a comma-separated list,
	  e.g. record.source=mic,cd.  Additionally, value may be omitted to
	  specify the empty set, e.g. record.source=.

     3.	  Numbers.  Numerical values may be specified in either absolute or
	  relative forms.  The relative form is indicated by a prefix of `+'
	  or `-' to denote an increase or decrease, respectively.

     MIXERDEVICE     The audio mixer device to use.

     /dev/mixer		    Default mixer audio device.
     /etc/mixerctl.conf	    mixerctl configuration file.

     Show possible values for all mixer variables, and their current settings:

	   $ mixerctl -av
	   inputs.mic=0,0 volume
	   inputs.mic.mute=off	[ off on ]
	   inputs.cd=220,220 volume
	   inputs.cd.mute=off  [ off on ]
	   inputs.dac=220,220 volume
	   inputs.dac.mute=off	[ off on ]
	   record.record=220,220 volume
	   record.record.source=mic  [ mic cd dac ]
	   monitor.monitor=0 volume

     Toggle inputs.dac.mute:

	   $ mixerctl -t inputs.dac.mute
	   inputs.dac.mute: off -> on
	   $ mixerctl inputs.dac.mute=toggle
	   inputs.dac.mute: on -> off

     aucat(1), audioctl(1), cdio(1), audio(4), mixerctl.conf(5), sysctl(8)

     The mixerctl command first appeared in OpenBSD 2.4.

OpenBSD 4.9		       October 19, 2008			   OpenBSD 4.9

List of man pages available for OpenBSD

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
Vote for polarhome
Free Shell Accounts :: the biggest list on the net