[LAU] Output to 2 sound cards simultaneously

drew Roberts zotz at 100jamz.com
Fri Sep 28 08:33:10 EDT 2007


On Friday 28 September 2007 12:49 am, Mark Constable wrote:
> On Friday 28 September 2007, Lee wrote:
> > > As a baseline, say I started with this, where could I go
> > > from here to get an app (ie; Amarok) to play back out two
> > > soundcards at once ?
> >
> > It's one of those things that seems like it should be easy but is in
> > fact nearly impossible.  The problem is that the sound cards cannot be
> > kept in sync on the hardware level.
>
> I can appreciate for input that would be a critical
> showstopper but for output it's not such a big deal.
>
> I mainly want to start down the track of trying to
> understand asoundrc magic and I thought this would be
> a nice gentle and practical first step.
>
> Could anyone offer an asoundrc recipe for me to work
> from (seeing I obviously have no idea at all) ?
>
> On 2007-09-28 14:43, david wrote:
> > Hmm, maybe you could play it to JACK and have JACK route it to both
> > sound cards?
>
> Can you suggest some apps or utilities for this purpose ?

qjackctl xmms with xmms-jackasyn to get a bit familiar with jack.

but some confused thinking on my part just now makes me think you may need to 
solve the original problem even if you want to use jack. I will know more 
after I get a chance to run those experiments...
>
> I've tried to use Jack over the past few years but I
> mostly end up with a locked up machine.
>
> --markc

all the best,

drew



More information about the Linux-audio-user mailing list