Re: Capture alsa output

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On Sun, 20 May 2007, Aron van Ammers wrote:

> Hi all,
>
> I want to capture all ALSA audio output, without capturing the input
> devices. I want the exact digital audio as I hear it from my speakers.
> This seems a fairly simple request to me, but I can't find a clear
> explanation on how to achieve it.
>
> My end goal is streaming all audio from one PC to another (using icecast
> and ices), without requiring special options in any software that
> produces sound.
>
> I found a thread from earlier this month about this:
> http://www.mail-archive.com/alsa-user@xxxxxxxxxxxxxxxxxxxxx/msg19585.html
> This didn't provide a clear answer though.
>
> I also found this suggestion:
> http://everything2.com/index.pl?node_id=1310145
> To create a pcm "copy" device. No luck with this either. When I run
> "arecord -t wav -D copy target.wav" I get a capture of the mic signal.

uh, of course. That is what you told it to do. arecord captures the mic
signal. You told it to make a copy of the signal it captured. 
aplay is the device that puts stuff out of the alsa port.

>
> How can I achieve this?
>
> Cheers,
> Aron
>
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