[PlanetCCRMA] problems with 4 channels on Quattro

Fernando Pablo Lopez-Lezcano nando@ccrma.Stanford.EDU
Sun Aug 10 11:05:02 2003

> could use some help with this usb audio Quattro by Maudio.
> I followed the directions on the alsa site, including the
> .asoundrc, with pd -alsadev I get chl 1 and 2 with quattro1
> device and ch 3 and 4 with quattro2 device just fine.
> running with -alsadev quattro or q4 makes a nasty squeal in
> the audio out and nothing else.
> using jack I got lots of dropouts in the standard error
> output, and the a app crash.

Try with a buffer size that is a multiple of 48 (for example, 480). More
than 2 periods per buffer also helps, I think. 

-- Fernando