[wdmaudiodev] question on MSVAD

  • From: "Andy Cao" <cao.andy@xxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Tue, 26 Aug 2008 18:09:46 +0800

Hi,
   I'm new guy on audio driver, and learn sample MSVAD in DDK. I wrote
a vitural mic driver based on MSVAD, and modify CopyFrom function. The
data is from a wave file or a noise produced myself. But the sound
captured by this virtual mic is discontinuous. The capture graph like
this:

     MSVAD  --->   speaker

  But when I use it to capture to the file, the wave file's sound is
normal.  (MSVAD ---> wavedest ---> file writer).

  Why the MSVAD capture sound is discontinuous? It seems that some
time the speaker is starved and has to fill the data by zero.
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