[linux-audio-user] Disabling Playthrough

[Darren Gibbs]

Well my problem is that playthrough has been enabled, and I don't want 
it to be (or I should say, I want to have control over it).  I can't 
figure out where to turn this off/on.  All of the obvious system 
control panels don't seem to have a setting for this.  Using command 
line tools for ALSA, I don't see anything either.  I wouldn't expect it 
to be turned on by default.  I have been able to record audio in 
audacity, so samples are being passed up to the application.  Now I 
have a weird situation where audacity says that the audio i/o system is 
unavailable.  Playthrough is working... speaker-test works.  Various 
audio players are able to play CD audio and open and play sounds files.

Linux audio is a bit byzantine compared to what I'm used to... there 
appear to be several interacting layers, and control panels in various 
places.  If anyone has suggestions or pointers to a good 
linux-audio-howto or getting started that explains all of this, I'd 
appreciate it.

thanks,

darren

On Jan 3, 2005, at 6:47 PM, Christoph Eckert wrote:
>
> Well, playthrough can bei two things:
>
> * The soundcard's input gets immediately visible on it's
> output, without going through your computer. Everything is
> done in the soundcard. Try a mixer application to enable this
>
> * You want to take the input signal, work on it maybe with
> jack-rach and put the changed signal out again. Try jack
> according to the videos, or any other application which can
> alter and output the incoming material.
>
> Let us know what you try to do so we can certainly can give
> some hints how to reach the desired results.