On Sun, 29 Feb 2004 02:53:58 -0800, Ray wrote:
first thing to check would be, if your soundcard supports feeding back the
mix into the capture source. For example, with my terratec dmx xfire 1024
[cd46xx] i can select "Mix" in alsamixer as capture source..
Then i can just use an application of my choice [like arecord [from
alsa-utils], for example] to record the captured sound.
Ok, but there is a pitfall in this case, too:
Many OSS apps open the /dev/dsp device for both reading and writing.
This blocks the digital audio capture device on the soundcard [if this is
the case depends on your hardware], thus making arecord not work.. A way
around this is by controlling the kernel level OSS emu like described on
this page:
http://alsa-project.org/~iwai/OSS-Emulation.html [look at the pcm mode
section]
If your sound hw doesn't allow independent opening of pcm capture and
playback at all, you can try the aoss script and a asym pcm device:
http://alsa.opensrc.org/index.php?page=asym
http://alsa.opensrc.org/index.php?page=aoss
If your soundcard does not support selecting Mix as capture source, then
it gets a little more complicated. I think there's a diskwriter plugin
available [see Plugin: File in:
http://www.alsa-project.org/alsa-doc...l#pcm_plugins].
Point your alsa apps to this device and you shouild be set. For oss apps
you need to use the aoss script for this..
It is also possible [via .asoundrc magic] to write to both pcm's [File and
your soundcard]..
Flo
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