[PD] Working RPI Soundcards (was raspberry pi user experience)

[Charles Goyard]

Hi list,

just to say, I'm testing the terratec aureon 7.1 on rpi+pd. This
interface works with the generic usb-audio driver.

It does not work well. I can get proper stereo output at 44.1KHz but not
more. If I setup pd to anything between 3 to 8 output channel, it gives
a sawtooth-like output in the test patch, even at 22KHz, 1 second
latency and large buffers.

Slowing down the usb does not solve it : the kernel says "schedule_periodic: Insufficient
periodic bandwidth for periodic transfer". Putting it on a powered usb hub does not help.

Cheers,

-- 
Charlot