[linux-audio-user] Just how bad is USB audio?

[iriXx]

Daniel James wrote:
>>If you have a minute, could you please check the level of cpu usage while 
>>using your quattro? Fex. when playing a cd, or better yet some 4-channel 
>>stream, which is uncompressed so that almost the cpu activity will be due to 
>>the usb bus activity. If it's negligible on your system, it should be so on 
>>mine too. 
> 
> 
> I'd also be interested in knowing the figures. Are you using all four channels 
> of audio in and out simultaneously, m?

tbh i havent put it to the test yet, mainly because i dont have 
sufficient mikes at home to set up the 4 in...

from patricks' comments on the quattro page at alsa-project.org...
http://www.alsa-project.org/alsa-doc/doc-php/template.php3?company=Midiman&card=USB+Audio+Quattro&chip=Cypress+AN2131XX&module=usb-audio#notes

"Remember that the quattro can
only do stereo i/o for 96000hz 24bit, 2i/1o or 1i/2o at 48000hz
24bit, 4i/4o at 48000hz 16bit in windows and mac environments.
YMMV in Linux :)"

sounds pretty positive to me.... especially as in windows 98 i only have 
the option of 2 in 4 out or 4 in 2 out....

m~



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