Re: Multiple sound cards

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Oh, Only read now about alsa_in and alsa_out. TIL!
Anyone knows how they compare to zita-j2a and zita a2j?

On 10.06.21 11:47, Max wrote:
An (easier) alternative is to use zita-j2a (zita-a2j for input), I'm surprised that's not even mentioned on that page. It takes care of the resampling when clocks drift.


On 10.06.21 11:35, Alf Haakon Pietruszka Lund wrote:
Hello list!

I am on (K)Ubuntu Studio 20.04) and needed a couple of extra in- and outputs, so I connected 2 USB audio interfaces to my computer (a FocusRite Scarlett 2i4 and an Edirol UA-25ex - they're old, but reliable devices).

Through Studio Controls I set the Scarlett as master device and started Jack, then I experienced recording and playback with Ardour in (as far as I can hear) perfect sync.

I was amazed at the ease of this setup and the problem-free routing of audio signals, so just for testing I split a stereo source recording one channel on each device to one stereo track in Ardour. To my ears, the sync is still perfect.

However, from this article https://jackaudio.org/faq/multiple_devices.html it seems I have to expect sync problems over time unless I do some manual configuring using the alsa_in and alsa_out clients.

Is this still valid?
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