Re: capturing sound card output

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On Wed, 02 May 2007 00:19:06 +0100
eespjl@xxxxxxxxxx wrote:

> Hi,
> 
>   It will depend on your sound card. I am able to select the "capture" 
> to be the output mix using the alsa mixer (intel8x0).  But this means 
> (in my case) the signal goes into the analog domain and is not as clean 
> as I would like.
> 
>   There are other ways to capture the sound, for example
> 
> http://www.vsound.org/
> 
>   It might not suit your case if several programs are generating the 
> sound opening and closing /dev/dsp.
> 
> 
>   Why not physically connect the output of your sound card to the input :-)
> You just need the right cable ?  (Make sure the output is not 
> monitoring the input to avoid feedback)
> 
> 
> cheers Paul
> 
> 
> 
> 
> 
> 
> 
> Quoting Paul Fox <pgf@xxxxxxxxxxxxxxxxxxxx>:
> 
> > hi -- googling, i can find quite a few people asking about this,
> > but no clear answers.
> >
> > is it possible to capture the mixed output?  i.e., capture what i hear?
> > most people seem to want this in order to capture streamed sources, but
> > in my case it's simply to record the output of a script that generates
> > sound snippets separated by silence -- i need to preserve the overall
> > timing of the sequence.
> >
> > i'm guessing that the answer is "no", given that alsamixer won't let
> > me select the output channel as the capture device, but perhaps there's
> > a trick i don't know.
> >
> > thanks,
> > paul
> > =---------------------
> >  paul fox, pgf@xxxxxxxxxxxxxxxxxxxx (arlington, ma, where it's 59.7 degrees)
> >
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> 
> 
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This a very frequently asked question - can't ALSA developers provide
a generic solution that would work with any card ?

I've been thinking about 'ecasound' and JACK, for example, to use such
a chain (if I'm not mistaken):

ALSA -> JACK -> ecasound --+--> JACK -> ALSA
                           |
                           \--> file
.

Regards,
  Sergei.

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