Speaker-test
From the ALSA wiki
(Redirected from Speaker-Test)
The Speaker-test program at alsa-project.org/~james is deprecicated and is now included in alsa-utils. To test your ALSA setup...
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[edit] Just stereo sound from one stereo jack
./speaker-test -Dplug:front -c2
[edit] A 4 speaker setup from two stereo jacks
./speaker-test -Dplug:surround40 -c4
[edit] A 5.1 speaker setup from three stereo jacks
./speaker-test -Dplug:surround51 -c6
[edit] 2-speaker test using the spdif (coax or optical) output
./speaker-test -Dplug:spdif -c2

