amixer command examples

amixer – command-line mixer for ALSA soundcard driver

#amixer -c 1 sset Line,0 80%,40% unmute cap

will set the second soundcard’s left line input volume to 80% and right line input to 40%, unmute it, and select it as a source for capture (recording).

 

#amixer -c 1 -- sset Master playback -20dB

will set the master volume of the second card to -20dB. If the master has multiple channels, all channels are set to the same value.

 

#amixer -c 1 set PCM 2dB+

will increase the PCM volume of the second card with 2dB. When both playback and capture volumes exist, this is applied to both volumes.

#amixer -c 2 cset iface=MIXER,name='Line Playback Volume",index=1 40%

will set the third soundcard’s second line playback volume(s) to 40%

#amixer -c 2 cset numid=34 40%

will set the 34th soundcard element to 40%