[Speex-dev] DC component coming back after AGC

Aymeric Moizard jack at atosc.org
Wed May 27 07:15:00 PDT 2009

Hi Jean-Marc & all,

I'm currently working on a wav file with very low volume.
This wav also contains a DC component.

Using testdenoise with modification (AGC turned on with
20000.0 value) I'm able to increase volume, but a new
irregular DC component appears again due to the AGC.
(seems to increase at the same time the AGC gain is increasing)

Using testdenoise again on the output, but without the
AGC, the preprocessor remove the newly introduced DC

Note that the input has really low volume which is most
probably the main issue here. Still this is showing that
using the AGC potentially introduce DC component? Any

amsip - http://www.antisip.com
osip2 - http://www.osip.org
eXosip2 - http://savannah.nongnu.org/projects/exosip/

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