Rapid training echo cancellor for telecommunications system

Details Rapid training echo cancellor for telecommunications system Rapid training echo cancellor for telecommunications system

1999-03-25

2008-09-09

Harold, Jefferey F. (Department: 2614)

Telephonic communications

Echo cancellation or suppression

Disable or inhibit function

C379S406010, C379S406060, C379S406080

Reexamination Certificate

active

07424109

ABSTRACT:
Plural echo cancellors each are tuned for different hybrid delays until it is established which echo cancellors are operating to cancel echos. The echo cancellors not so operating are then terminated.

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V.A. Margo et al. “Multiple Short-Length Adaptive Filters For Time-Varying Echo Cancellation”, 1993 IEEE International Conference on Acoustics, Speech, and Processing, Apr. 27-30, 1993, pp. I-161-I-164.

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