MIXER(8) BSD System Manager's Manual MIXER(8)NAMEmixer — set/display soundcard mixer values
SYNOPSISmixer [-f device] [-s] [-h] [dev [[+|-]lvol[:[+|-]rvol]]] ...
mixer [-f device] [-s] recsrc ...
mixer [-f device] [-s] {^|+|-|=}rec rdev ...
DESCRIPTION
The mixer utility is used to set and display soundcard mixer device lev‐
els. It may also be used to start and stop recording from the soundcard.
The list of mixer devices that may be modified are:
vol, bass, treble, synth, pcm, speaker, mic, cd, mix, pcm2, rec,
igain, ogain, line1, line2, and line3.
Not all mixer devices are available.
Without any arguments, mixer displays the current settings for all sup‐
ported devices, followed by information about the current recording input
devices. If the dev argument is specified, mixer displays only the value
for that dev.
To modify the mixer value dev, the optional left and right channel set‐
tings of lvol[:rvol] may be specified. The lvol and rvol arguments may
be from 0 - 100. Omitting dev and including only the channel settings
will change the main volume level.
If the left or right channel settings are prefixed with + or -, the value
following will be used as a relative adjustment, modifying the current
settings by the amount specified.
If the -s flag is used, the current mixer values will be displayed in a
format suitable for use as the command-line arguments to a future invoca‐
tion of mixer (as above).
To change the recording device you use one of:
^rec toggles rdev of possible recording devices
+rec adds rdev to possible recording devices
-rec removes rdev from possible recording devices
=rec sets the recording device to rdev
The above commands work on an internal mask. After all the options have
been parsed, it will set then read the mask from the sound card. This
will let you see EXACTLY what the soundcard is using for the recording
device(s).
The option recsrc will display the current recording devices.
The option -f device will open device as the mixer device.
The option -h will print a help and exit
FILES
/dev/mixer the default mixer device
SEE ALSOcdcontrol(1)HISTORY
The mixer utility first appeared in FreeBSD 2.0.5.
AUTHORS
Original source by Craig Metz ⟨cmetz@thor.tjhsst.edu⟩ and Hannu
Savolainen. Mostly rewritten by John-Mark Gurney ⟨jmg@FreeBSD.org⟩.
This manual page was written by Mike Pritchard ⟨mpp@FreeBSD.org⟩.
BSD January 9, 1997 BSD
