[alsa-devel] snd-usb-audio syncronisation problem

Clemens Ladisch clemens at ladisch.de
Tue Feb 26 09:49:31 CET 2008

Adrian Stancu wrote:
> OK, I tried playing the stereo file but still getting the same error:
> deathu at vader:~/Desktop$ aplay -D hw:1 testtone192.wav
> Playing WAVE 'testtone192.wav' : Signed 16 bit Little Endian, Rate 192000 Hz, Stereo
> aplay: set_params:918: Sample format non available

Oops, the device supports only 24-bit samples, and this isn't supported
by .wav files, so using hw:1 won't ever work with aply.

> Well, my test file contained a single constant frequency tone; it is
> still there while I play the 192k file through plughw:1,0, but burried
> under:
> - periodic series of clicks
> - other high frequency tones
> Here is  /proc/asound/card1/stream0 while playing through plughw:1,0:
> ...
>     Momentary freq = 192000 Hz (0x18.0000)

Does this value ever change?
Could you again try inserting a printk to see whether the driver thinks
it gets invalid frequency values?


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