I own 2 18ch audio interfaces, and both have the same symptoms described in 
Since I wrote that mail, I did a little research. My hypotesis is that audio is 
9 times faster as driver is handling 18 channels like they are 2. Also, if 
something for stereo stream is sent to all outputs, you expect to get some 
small and very high pitched output on all out jack, and I do. Also, playing 
with http://manuals.opensound.com/developer/singen.c.html revealed to me that 
if SNDCTL_DSP_CHANNELS is set to number different than the number of actual 
channels in a working stack (laptop and it's internal audio interface, in my 
case), you get difference in pitch and volume.

I didn't poke snd_uaudio code, yet, as I didn't do any kernel development 
before, but I'm affraid the number of kernel developers with multichannel audio 
interfaces is quite low, so I don't mind getting my hands dirty, but I'd love 
to get some advice before I attack this problem. Thank you!


Attachment: signature.asc
Description: PGP signature

Reply via email to