Re: [LAU] linking soundcards

Am Donnerstag, 25. Oktober 2007 schrieb torbenh@email-addr-hidden:
> On Thu, Oct 25, 2007 at 07:06:12PM +0200, Arnold Krille wrote:
> > Am Donnerstag, 25. Oktober 2007 schrieb Atte Andr? Jensen:
> > > 1) Can I link the onboard soundcard and an usb soundcard so that they
> > > appear to the system as one four channel device?
> > > BTW: I don't need super low latency and I only need playback. The
> > > laptop is gonna be an IBM x61 running ubuntu and the usb card is an
> > > Edirol UA-1A.
> > But you need stability. And you won't get stability with that setup.
> > Please ask the archives why linking two soundcards without syncing them
> > with sample-accuracy is _never_ working.
> inside of netjack there are two programs, alsa_in and alsa_out
> just build netjack on your system, then run jackd -d alsa -d usbcard -p
> 1024
> and alsa_out -d internal_card -t 1200 -m 300 -f 10000
> tune -t and -m ....
> have fun....
> then think about never say never... resampling is your friend....

Yeah, thought about it. And I said that it will never be sample-accurate. And
your solution with netjack will _never_ be sample accurate as you do
resampling to overcome the inaccuracy...

It might be a solution (apart from that fiddling around with -t and -m and the
possible unstable delays). And will it be stable if I tune my system at home
and then at live forget half the important tweaks I did at home? (I did spent
an (live) afternoon complaining about instability only to find that the wlan
on the same irq was causing the problems.)

Have fun,

Arnold

-- 
visit http://www.arnoldarts.de/
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