[LAU] Jack and Virtual Loopback device as permanent Alsa-to-Jack bridge

Peter Nelson peter at fuzzle.org
Tue May 4 14:41:08 UTC 2010


On Tue, 2010-05-04 at 06:19 -0700, James Warden wrote:
> 
> --- On Tue, 5/4/10, Peter Nelson <peter at fuzzle.org> wrote:
> 
> > From: Peter Nelson <peter at fuzzle.org>
> > Subject: Re: [LAU] Jack and Virtual Loopback device as permanent Alsa-to-Jack bridge
> > To: linux-audio-user at lists.linuxaudio.org
> > Date: Tuesday, May 4, 2010, 8:38 AM
> > On Mon, 2010-05-03 at 06:01 -0700,
> > James Warden wrote:
> > > Hello,
> > > 
> > > I wrote a WIKI page on how to bridge ALSA apps that do
> > not "talk jack" at all (like skype) or poorly (like lmms) by
> > using the ALSA virtual loopback sound card. There are a few
> > reasons why I chose to use this trick, which I explain along
> > the WIKI page. Just read it if you are bored and send back
> > comments if you like :)
> > > 
> > > http://alsa.opensrc.org/index.php/Jack_and_Loopback_device_as_Alsa-to-Jack_bridge
> > > 
> > > Cheers!
> > > J.
> > 
> > Sadly this is not infallible either. After a while I
> > sometimes end up
> > with just static and need to restart either the ALSA user
> > or alsa_in...
> > 
> >
> Hi Peter, it does not sound too good :/ I have not experienced 'static' on my system. What are your system specs ?
> 
> J.

I'm using a Debian Lenny system, but with ALSA 1.0.21 drivers, on an AMD
Athlon 64 X2 5600+

Seems to be some kind of timing issues with snd-aloop. Rhythmbox, for
instance, will sometimes also get stuck and continue playing the same
sample buffer over and over, and also sometimes gets stuck at the end of
a track.

-- 
Peter



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