In case anyone looks at this thread, I'd better mention that it seems that using CCRMA's distribution fixes my audio problems with the Behringer UCG102.

I had been using the standard "Raspbian" distro when I wrote my comment. I believe that distribution uses a different kernel than Satellite CCRMA, which is optimized more for embedded audio projects.

I had been unable to do duplex audio at 44100hz (had to switch to 32000), but now it seems to work fine (even when running pd with an X11-forwarded GUI). There's no noticeable dropouts at a latency of 10ms, at least in my initial testing!

In order to get this to work, I simply had to change the text of /boot/cmdline.txt to the text politely included in /boot/cmdline-usb1.1-only.txt (thanks, Stanford guys!)

Anyway, just hoping I haven't led anybody astray from the Pi with my earlier (somewhat misinformed) comment. I'd still be a little wary of using devices with more channels or without linux drivers.

-Brian

On Fri, Jan 24, 2014 at 5:07 AM, Simon Wise simonzwise@gmail.com wrote:

On 24/01/14 01:52, Chris McCormick wrote:

...

Hi all,

I might be really pushing my luck here, what with all the reports of audio issues on the Pi, but has anyone heard of somebody getting multi-input audio working with a multi-input USB 2.0 audio device?

I have a dream of running one of these mixers (which does 8 channel audio out over USB 2.0) into Pd and being able to manipulate all of the channels from the mixer in Pd:

http://www.alesis.com/multimix8usb20

given they need audio drivers for windows and mac I don't like your chances on linux, let alone a Pi, except perhaps the USB1.1 mode with 2-in 2-out.

Apparently the esi gigaport hd+ does 8 channels OUT from the Pis, but I have not heard of any devices working with 8 IN.

By the way ... finished my degree and I'm now in Sydney, if you're heading this side of he country sometime let me know.

Simon

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