S C Rigler <riglersc@...> writes: > On Thu, Jan 31, 2013 at 2:59 PM, Bob van der Poel <bob@...> wrote: > > 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 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user