Yes but pulse audio is not installed on my computer and each time I try to use it, it seems to be very complicated to use.
In fact, I must use an other mixer than alsamixer, and I must run an other daemon at startup... I don't like this solution.
I prefer your second solution using only ALSA and the ~/.asoundrc file.
I have written this:
pcm.mycopy
{
type copy
slave MySlave
file MyFile
}
So, this special device called "mycopy" copies sound.
But I am not sure if it copies from virtual audio card to actual audio card and to file writer.
Can you help me to correct this ~/.asoundrc file ?
Also, I don't see this new device in my alsamixer.
How to see if my new special device is now available ?
On Sun, 28 Jul 2013 11:35:44 +0700
Ильдар Ахметгалеев <akhilman@xxxxxxxxx> wrote:
> For me eases solution is useing pulse audio. It hase nice alsa
> emulation and gives ability to grab sound from output mnoitor:
>
> AR=44100
> CHANNELS=1
> VQ=5
>
> ASRC=$(pacmd list-sources \
> | sed -n 's/name: <\(alsa_output.*monitor.*\)>/\1/p' \
> | head -n 1)
>
> ffmpeg \
> -f pulse -i $ASRC \
> -ac $CHANNELS -ar $AR \
> -acodec pcm_s16le \
> ${OUTPUT}.a1.wav
>
> Also alsa has native 'file' plugin. You cab write your own .asoundrc
> with special device which copies sound from virtual audio card to
> actual audio card and to file writer. Look at
> http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html
>
> And of course some sound cards has ability to route sound from output
> to input. Check "source" variable in you alsa mixer in recording mode.
>
> 2013/7/28 <lists@xxxxxxxxxxxxxx>:
> > Regarding recording the speakers, I think the poster wants the equivalent of "what you hear" on windows machines.
> >
> >
> >
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