[Speex-dev] AGC on a phone conversation
bandit at surfnonstop.com
Tue Aug 23 02:48:17 PDT 2011
2011.08.19. 5:59 keltezéssel, Yanick Bourbeau írta:
> I have a recorded conversation from an analog trunk. As usual one side
> is stronger that the other one.
> In my case, the gap between signal levels are even bigger.
> How does speex AGC preprocessor will perform on this type of audio
> Maybe I am wrong and AGC is not really what I need to equalize the two
> persons in my phone conversation?
> As I Understand, AGC will perform better if each party is recorded in a
> different channel?
Yes, this is correct, I definitely recommend AGCing the two parties
separately. Otherwise, if you tried to AGC the two parties mixed into a
single channel, the AGC would have to keep readjusting between two very
different levels/environments all the time, which would give much worse
results. With separate channels, each AGC only has to home on to the
level on that channel just once, at the beginning, and then just follow
that with small adjustments.
> Thank you,
> Yanick Bourbeau
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