[LAU] Using multiple sound cards with jack

[Joe Hartley]

As Jeanette noted, it's possible but not simple.

I documented the process for Delta 1010 cards at 
http://delta.brainiac.com/deltasync.html

You don't *have* to have the cards' clocks synced to make a combined device,
but if you don't the drift apart will become apparent before long.

On Thu, 30 Mar 2017 13:49:21 +0200 (CEST)
"Jeanette C." <julien at mail.uni-paderborn.de> wrote:

> Mar 30 2017, Bill Purvis has written:
> ...
> > Is it possible to have more than on 
> > audio output
> > here?
> Hi Bill,
> as far as I know, there are only two choices: if the soundcards are of
> similar make, you might link them by using worldclock and then make a
> multi device in ALSA. This at least works for the Delta 1010 soundcards.
> 
> Then there is alsa_in and alsa_out, which can make JACK ports from other
> ALSA devices. IIRC the work fine these days.
> 
> I can think of no direct way to connect more than one soundcard to JACK.
> 
> HTH.
> 
> Best wishes,
> 
> Jeanette
> ...
> 
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-- 
======================================================================
       Joe Hartley - UNIX/network Consultant - jh at brainiac.com
 Without deviation from the norm, "progress" is not possible. - FZappa