Hi,

I am working on OMAP4 platform (Panda Board) using ubuntu 10.10(kernel: 2.6.35) and recording audio with USB mic and getting the following problem:

When I am recording with the arecord utility as shown below:

*$ arecord -Dplughw:1,0 -f cd foo.wav * audio is recorded with XRUN.

So we have tested by changing buffer size and period size as shown below,

*$ arecord -Dplughw:1,0 -f cd --buffer-size=65536 --period-size=128 foo.wav *

and we are getting good recorded audio quality.

I found from other posts that buffer-size of 65536 is very large and it should work with size of only 1024. same usb mic works without xruns on my desktop with buffer size 1024.

The problem is that the application has to be told to use insanely large buffers in order to avoid xruns. I suspect the problem is either in the kernel (possibly just a misconfiguration) or in hardware.

So Can anyone suggest, how to solve the above problem?

Regards, Abdul Moiz