On Thu, 7 Apr 2005, 1 2 wrote:
> Does anyone happen to know the difference between echo
> cancellation vs echo suppression - particulary in
> relation to polycom settings - the sites I have come
> across seem to use the terms interchangeably.
Echo Supresser == mute (or replace with comfort noise) the non-speaking
party
Echo Canceller == subtract the expected echo from the received signal,
leaving only the non-echo audio.
In reallity you usually use both, the canceller is active during
double-speak and the supressor when only one party is speaking.
Peter
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