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Echo Cancelation


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It might depend on the path it takes. Maybe one provider does it for you, maybe the other does not. Maybe the delay gets so long that the delay gets out of range for echo canceler. Echo cancellation is a tricky topic.


A good headset does the echo cancellation right in the headset. There are even microphones that do the digitization right in the microphone, so that there is no line echo at all. Echo is easy to kill if you do it right at the source and then down the path the involved parties don't have to deal with all sorts of tricky digital signal processing issues.

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