Synchronization of echo cancellers in a voice processing system

Details Synchronization of echo cancellers in a voice processing system Synchronization of echo cancellers in a voice processing system

2006-02-21

2006-02-21

Tran, Sinh (Department: 2646)

Telephonic communications

Echo cancellation or suppression

C379S406020, C379S406030, C379S406040, C379S406050, C379S406060

Reexamination Certificate

active

07003097

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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