[wdmaudiodev]

  • From: ambrish dantrey <a4ambrish@xxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Fri, 21 Mar 2014 18:18:38 +0530

I am running into some very strange issue with loopback capture

1) Open a loopback capture stream on default audio endpoint (headphones)

2) Play audio using WMP. This audio gets captured in loopback stream

3) Terminate audio playback using ctrl+w shortcut.

At this stage, you'll get a buzzing sound from my headphones.

This buzzing sound will go away only after I terminate loopback capture.

Does anyone have any idea on how loopback capture can affect audio going
out on the device?

I am using sample code at and modified it to not stop capture when flags
are non-zero.

http://blogs.msdn.com/b/matthew_van_eerde/archive/2008/12/16/sample-wasapi-loopback-capture-record-what-you-hear.aspx

Thanks

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