[Speex-dev] Denoise causing drain pipe effect in audio

Jean-Marc Valin jean-marc.valin at usherbrooke.ca
Fri Jun 4 22:12:51 PDT 2010

On 10-06-05 12:17 AM, Steve Underwood wrote:
> I've never heard a single mic denoiser that doesn't sound best in the
> "off" position. :-)

The way I see this, it'll be a long time before a single-mic denoiser 
can really improve *intelligibility*. However, they can be useful in 
many setups as a sort of "improved VAD" when mixing noisy signals from 
multiple environments or when one is listening for a long time. Of 
course, performance varies a lot depending on the noise. When it's very 
stationary, some denoisers can give good results. On the other hand, I 
haven't yet heard a denoiser that goes any good on babble noise.


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