Re: [proaudio] netjack and several sound cards

[Dominique Michel <dominique.michel@xxxxxxxxx>]

Le Wed, 18 Feb 2009 20:55:45 +0100,
Mysth-R <mysthr21@xxxxxxxxx> a écrit :

> Well I didn't try yet with jackdmp, so I can help you ... but you can ask to
> sletz on #lad IRC channel. He is the main developper.
> 
> Cheers,
> 
> Mysth-R
> 

Thanks, I already done that. From the discussion, one must start one sound card
in jackd as usual. The other sound card will be started with something like:

# jack_load audioadapter -i "-d hw:1"

It is also possible to force the jackd parameters like:

# jack_load -i "-d hw:1 -r48000 -p1024 -n2"

You will get 2 audioadapter ports in both the input and the output ports.

It doesn't work with my audiophile 192. All I get is nothing when my other card
is for jackd and the 192 is for audioadapter, or much more noise than sound
when the 192 is for jackd and the other card for audioadapter.

sletz tell me that he get the same result.

Ciao,
Dominique

> 2009/2/18 Dominique Michel <dominique.michel@xxxxxxxxx>
> 
> > Le Wed, 18 Feb 2009 19:32:13 +0100,
> > Mysth-R <mysthr21@xxxxxxxxx> a écrit :
> >
> > > hi,
> > >
> > > Yes you can use alsa_in and alsa_out.
> > >
> >
> > Thanks. I use jackdmp and alsa_out is not on my system. But according to
> > http://www.nabble.com/NetJack2---development-status-(2)-td19168168.htmland
> > http://trac.jackaudio.org/wiki/WalkThrough/User/NetJack2, "jack_load
> > audioadapter" can do the same.
> >
> > The problem is that it just doesn't work. All that it make is a lot of
> >
> > JackAudioDriver::ProcessAsync Process error
> > JackEngine::XRun: client = netmanager was not run: state = 1
> >
> > And "jack_load netmanager" was running.
> >
> > A side effect is that sound is not working afterwards (jackd is still
> > running, strange). I have to restart alsasound.
> >
> > Cheers,
> > Dominique
> >
> > > run jack normally. For exemple you have 3 sound cards :
> > >
> > > $ jackd -R -dalsa -dhw:0
> > >
> > > Then you have to run alsa_out for the others sound cards :
> > >
> > > $ alsa_out -dhw:1 -f100000
> > > $ alsa_out -dhw:2 -f100000
> > >
> > > Then you should see alsa_out in your jack connections. (same for alsa_in)
> > > Sometimes you will have to use -dplughw:1  in spite of -dhw:1
> > >
> > > the -f is a factor of quality between 30 000 and 100 000. 100 000 is the
> > > best quality.
> > > You can have a look at :
> > > http://trac.jackaudio.org/wiki/WalkThrough/User/AlsaInOut
> > >
> > > It seems that it could be some issues with Usb sound cards.
> > >
> > > Cheers,
> > >
> > > Mysth-R
> > >
> > > 2009/2/18 Dominique Michel <dominique.michel@xxxxxxxxx>
> > >
> > > > I have several sound cards into my box and only one of them have a
> > world
> > > > clock.
> > > >
> > > > Jack can work reliably only with one of them. Do you know if it is a
> > way to
> > > > use
> > > > netjack with 2 or more sound cards in the same computer?
> > > >
> > > > Dominique
> > > >
> > > >
> > > >
> > >
> > >
> >
> >
> >
> 
>