US Patent 7003097 Synchronization of echo cancellers in a voice processing system
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Patent abstract
Methods and apparatus for processing a received voice signal from a variable-delay network by a communications system that has at least one echo canceller. An echo canceller determines delay characteristics that are associated with the received voice signal and correspondingly modifies echo cancellation processing. In a variation of the embodiment of the invention, a first echo canceller sends silence descriptor information to a second echo canceller. The second echo canceller reconstructs a voice signal based upon the silence descriptor information and excitation vector information.
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Patent Inventor Names
Charles W. K. Gritton0
Daniel J. Marchok0
Ravi Chandran0
Richard C. Younce0
Date of Patent
February 21, 2006
0Patent Application Number
102838400
Date Filed
October 30, 2002
0Patent Primary Examiner
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US Patent 7003097 Synchronization of echo cancellers in a voice processing system
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