C++/VB - Capture post-AEC audio samples on Windows XP

Asked By DVBoghen

28-Oct-09 04:55 PM

Hello,

We need to apply Microsoft AEC on the audio samples captured from a local
microphone, and then send these post-AEC (echo-free) samples to another
computer for playback.

We can do AEC using DirectSoundFullDuplexCreate8, but that only allows to
PLAY Echo-free audio samples LOCALLY. We do not need to play it locally; we
just need to receive these echo-free samples into our own buffer. For
example, to write it to a file or to stream it to another computer.

How to do that?

Thanks,
David

19-Dec-09 12:55 AM

e

Well David,
The whole definition of AEC is to "remove" the speaker output from the
mic input on the near-end "local" machine.  So what you do is take the
output of the mic (which will be post-AEC-processed) and write that to
a file.
/Loren