utility is used to set and display soundcard mixer device levels.
also be used to start and stop recording from the soundcard.
of mixer devices that may be modified are:
vol, bass, treble, synth, pcm, speaker, line, mic, cd, mix,
pcm2, rec, igain, ogain, line1, line2, line3, dig1, dig2, dig3,
phin, phout, video, radio, and monitor.
Not all mixer devices are available.
Without any arguments,
displays the current settings for all supported devices, followed by information
about the current recording input devices.
argument is specified,
displays only the value for that
To modify the mixer value
the optional left and right channel settings of
may be specified.
arguments may be from 0 - 100.
and including only the channel settings will change the main volume level.
If the left or right channel settings are prefixed with
the value following will be used as a relative adjustment, modifying the
current settings by the amount specified.
flag is used, the current mixer values will be displayed in a format suitable
for use as the command-line arguments to a future invocation of
flag provides the above output without mixing field separators.
To change the recording device you use one of:
of possible recording devices
to possible recording devices
from possible recording devices
sets the recording device to
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
The option recsrc will display the current recording devices.
as the mixer device.