Subject: Re: [linux-audio-dev] mixer question
From: Erik Steffl (esteffl_AT_pbi.net)
Date: Thu Apr 06 2000 - 23:03:11 EEST
I have soundblaster awe 64 + linux 2.2.14 + commercial OSS.
it looks more like concept of oss mixer then actual hw (or my
misunderstanding of oss mixer)
windows mixer can be set to control either recording or playback
levels. it worked on soundcards I have tried it with (soundblaster,
ess1869 (IIRC) and few unidentified cards).
however, I see no way in OSS mixer to control recording levels
independently form playback levels. mostly I am interested in recording
from line-in without hearing line-in input from speakers.
erik
Paul Barton-Davis wrote:
>
> > in the other OS I can set up separate volumes for recording and
> >playback, so I can record from line, do some real time processing and
> >hear it on the output (only the result of the processing, NOT the signal
> >that goes into line-in).
> >
> > however, the linux mixer (at least OSS) does only have one volume
> >settings and no matter what I did I was not able to get the recorded
> >signal recorded but not heard on the output...
> >
> > any ideas why is it that way? is alsa different?
>
> your question doesn't make much sense without knowing what kind of h/w
> you have as a soundcard.
>
> under OSS-as-it-is-in-the-kernel, with a Tropez+ (CS4232 audio chip),
> i never had the problem you describe.
>
> under ALSA, with a Tropez+ and a Trident 4D Wave card, I've never had
> the problem you describe.
>
> --p
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