SYSTEM AND METHOD FOR ECHO REDUCTION IN AUDIO AND VIDEO TELECOMMUNICATIONS OVER A NETWORK
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United States of America Patent
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Issued Date -
Jun 7, 2012
app pub date -
Dec 5, 2011
filing date -
Dec 6, 2010
priority date (Note) -
Abandoned
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Abstract
A method and a system use an intermediate server to process the communication between two parties, so as to eliminate echoes between them. The server performs echo cancellation in a network-based voice communication system handling a large number of conversations. In one implementation, the server allocates two echo cancellation modules to each conversation, with each echo cancellation module including (a) a communication interface for communicating with a client program associated with the echo cancellation module; (b) a first buffer for storing audio data received from the client program for transmission to another echo cancellation module; (c) a second buffer for storing audio data received from the other echo cancellation module for transmitting to the associated client program; and (d) a set of filters using the audio data in both the first buffer and the second buffer to cancel echoes in the audio data in the second buffer.
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