Re: ALSA - JACK via loopback device

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On 23/09/12 17:11, Joakim Hernberg wrote:
On Sun, 23 Sep 2012 16:51:34 +0200
Sebastian Rose <s.rose@xxxxxxxxxx> wrote:

Silly: yes. But if I want to use Flashplayer and Skype at the same
time and don't want to use different soundcards (quite a recording
hassle for podcast production, for example) and use a decent audio
interface with a good microphone, I'm stuck with this choice.

Here is what I'm using very successfully to run kde, skype and some
games over jack/hdsp instead of the built in intel-hda.  It was written
by falktx, of kxstudio fame.

It comes in three parts:

http://dl.dropbox.com/u/879835/.asoundrc
http://dl.dropbox.com/u/879835/jacklib.py
http://dl.dropbox.com/u/879835/aloop-daemon.py

It actually makes audio on my system a dream to work with, and allows
me to route it around as I wish.  One could conceivably create even
more loopback devices for specific apps, but this has worked great so
far.

Ah, thanks a lot for your asoundrc file. I was on the right track with my dmix setup, but I didn't think about the fact that the JACK loopback side for simultaneous playback needed format and rate specifications. So basically it goes dmix -> dsnoop for one direction and dsnoop -> dmix for the other (in case that there are multiple applications that simultaneously recording via the ALSA layer). Your setup doesn't cover the last part, but I grant it's a pathological case since nothing comes to mind (maybe Mumble and Skype simultaneously for whatever reason).
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