[speex-dev] Noise problem with high harmonics

Jean-Marc Valin jean-marc.valin at hermes.usherb.ca
Tue Apr 8 19:38:01 PDT 2003

> I have noticed, however, on cheaper microphones that Speex will
> produce loud static noise at high harmonics/amplitude in the sound. 
> Is there some setting to prevent this static?  I donÿt have this
> problem with various other manufacturer voice coders that I am using
> in the test project.  It only happens when someone makes a loud noise
> into the microphone and the microphone isnÿt top quality or have noise
> cancellation.

I can't say much unless you provide me with (small) samples (original
and codec) that show this problem. Also, send the parameters (quality,
complexity, ...) you use.


Jean-Marc Valin, M.Sc.A.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec, Canada

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