Speex dev - Aug 2004 - Noise problem with high harmonics

I just finished testing and integrating Speex into our test project.  Speex
works excellent and sounds great for the bitrate.

 

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 don't 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 isn't top quality or have noise cancellation.

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> 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


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

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