Matt,
Thanks for your help!
Eventually I got the mic working at an acceptable level using alsa's softvol
plugin.
How to do that:
- get the latest alsa-driver snapshot (12-Jan-2008).
- get the alsa-utils, alsa-lib (1.0.15).
- create/edit ~/.asoundrc (per user) - this is mine:
pcm.digmic {
type softvol
slave.pcm "default"
control.name "digmic"
control.card 0
min_dB -30.0
max_dB 30.0
}
The "digmic" is a name chosen by me as a new created recording device, which
will be detected by an alsa-compliant application at it's start - you must
select it for recording in the application's settings.
The "digmic" is a name chosen by me as a new mixer that will appear *after*
starting using this device - this is not crap but a feature like the windows
vista dinamic mixers which appear for every new application started.
Tested with skype and audacity - you can properly use the mic. There is a
noticeable background noise - more powerful than the one in vista - but I can't
tell for sure.
Also the "Digital" slider appears in the mixers, so both "digmic" and "Digital"
will appear among the mixers and they both influence the volume. None will
appear if you don't have this entry above in ~/.asoundrc. It's like a
redundancy which doesn't make much sense to me - maybe I got something wrong,
but in the end the mic is working...
Thanks guys!
Mihai
--
[PATCH] Add STAC9228 DMIC support, SRU TEST CASE
https://bugs.launchpad.net/bugs/153963
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