Speex dev - Jan 2005 - voice activity detection

Hello,

I am wondering whether Speex's voice activity
detection mechanism can be used independently of
encoding and decoding speech, and how reliable it is
in general. I need this kind of functionality for a
project I am working on, and I was wondering if Speex
provides it in a ready-to-use fashion, or if it
requires modification of the source code. If so, I
would be glad to consider doing this work for the
benefit of others with some guidance (depending on
complexity and usefulness).

Thanks,

Joe.




		
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Joachim Boomberschloss wrote:
>Hello,
>
>I am wondering whether Speex's voice activity
>detection mechanism can be used independently of
>encoding and decoding speech, and how reliable it is
>in general. I need this kind of functionality for a
>project I am working on, and I was wondering if Speex
>provides it in a ready-to-use fashion, or if it
>requires modification of the source code. If so, I
>would be glad to consider doing this work for the
>benefit of others with some guidance (depending on
>complexity and usefulness).
>  
>
Yes, it can. It's in speex_preprocess, and the preprocessor is 
independent of the codec.

It's used just like this in iaxclient (also, for denoising, AGC, etc).

-SteveK