linuxaudio.org

S C Rigler  writes:
> On Thu, Jan 31, 2013 at 2:59 PM, Bob van der Poel  wrote:

quoted text
> > Now, I want to plug in a usb microphone in addition to the other

> > device already running. So, the question becomes: How do I add a 2nd

> > device to an already running jackd? Or do I need to tell jack when it

> > starts to use 2 devices (again, how?). And, will audacity catch on to

> > this?

> >

>

> In this case I would probably start jack using the USB audio interface

> and use alsa_in for the microphone.

FWIW, I tried alsa_out once upon a time, to handle a 4-channel-out USB interface

that appears to Linux as two stereo devices. It was a complete disaster. After

booting Jack and launching alsa_out, it took between 5 and 10 minutes before the

devices would synchronize. Before that, constant glitching. Then, if I left the

devices silent for a time, they would go out of sync again after a few minutes.

More glitching.
At that point, I started to feel that was no longer a viable solution to

explore. I (still) wouldn't trust alsa_out or _in for anything serious.
YMMV.
hjh
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