[Speex-dev] Echo cancelling results

Jean-Marc Valin jean-marc.valin at usherbrooke.ca
Sun Sep 7 19:54:20 PDT 2008

The echo canceller is meant to cancel echo on real data, not synthetic
tones. Try in real conditions and it might work better. Also, see the
manual, especially the troubleshooting part about the echo cancellation


Magnus Ekhall a écrit :
> Hi,
> I wanted to play around with the echo canceller so I tried the testecho 
> program.
> As speaker sound I fed it with a 440 Hz sine wave, and as mic with a 550 
> Hz + 440 Hz sine waves sound (but the 440 Hz component half the amplitude).
> I kind of expected to get a somewhat clean 550 Hz sine out, but it 
> doesn't seem to work that way.
> Are there better samples I can use with testecho to see some results 
> from the echo canceller?
> Or did I do something wrong?
> Thanks,
> Magnus
> _______________________________________________
> Speex-dev mailing list
> Speex-dev at xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev

More information about the Speex-dev mailing list