In Xp, USB audio devices capture or play with higher frequency than specified.

[vinaykabadi]

Hello,

I work for audio development. I have used
Dsound for my capture playback, in the mean while I have found that
the USB camera with mic captures more than specified frequency. I
tried to capture at 8000Hz, 16 bits, mono. But when I get the average
results in 1 minutes.. I found that it is actually capturing around
8100 Hz. The same thing happens for playback too with USB Speakers.
Not only my code it seems that all the audio applications behave in a
same way.

But the sound card devices behaves properly i.e they capture more or
less 8000Hz. I dont understand why Xp behaves like this.

Can sombody help me out to get an work around to avoid this problem.

Regards
Vinay