A small script which tests whether the ALSA mixer lives up to PulseAudio's (and other
advanced ALSA clients) expectations. If you are familiar with dbmeasure or dbverify
by Lennart Poettering, this application's purpose is very similar, but this one is
hopefully easier to set up, more user friendly, and also tests that the names of the
volume controls are correct.
My hope is that this will aid as a debugging tool for all these
"everything below 20% of my speaker is muted, and then 21% blows my speakers" bugs.
To use the tool, you'll need some kind of loopback. You can e g use a loopback cable
and connect that between line in and line out, or test your laptop's internal speakers
with your laptop's internal mic (just stop humming when you do so :-) ). Just set up the
recording levels appropriately.
When it is installed, run "alsamixertest -r" for a small tutorial and "alsamixertest -h"
for command line options help.