At Thu, 18 Jun 2009 17:14:31 +0800, Karthik Ramgopal wrote:

Hi, How to check if it works in stereo or mono mode? I remember reading hector's entry on his blog that on account of some wierd sum/difference problem he had duplicated the + signal across both outputs so it was actually mono?

You can check which format / quality is used to record in gnome sound recorder. Try to record as Ogg, for example.

Also, you can try to reproduce the problem via aplay. Record like % arecord -Dplughw -fdat -c1 foo.wav and % arecord -Dplughw -fdat foo.wav Are both correctly recorded?

(On a system with pulseaudio, run with pasuspender such as

% pasuspender -- arecord ...

Takashi