[Speex-dev] Acoustic echo cancellation

Arun Raghavan arun.raghavan at collabora.co.uk
Tue Jun 21 10:22:06 PDT 2011

Hi Andras, others,

Andras Kadinger <bandit <at> surfnonstop.com> writes:
>     Daniel,
>     I recommend you to start from a simple case and gradually progress
>     towards your goal.
>     Can you make things work with the "Speex in a Disco" (Example 6)
>     testcase at http://ns.surfnonstop.com/~bandit/speex/echocard1/ ?
>     These files were captured via a stereo soundcard, so the channel
>     sample clocks are exactly synchronized, making for a simple baseline
>     testcase for AEC.

I'm trying to run current speex with your test program on these samples,
and while the quality is quite nice, it's not nearly as good as the
samples on that site. I tried to bisect git back to the SVN commits
mentioned there, but I get about the same results. Am I missing


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