Method and device for echo cancelling

Details Method and device for echo cancelling Method and device for echo cancelling

2005-07-12

2005-07-12

Tran, Sinh (Department: 2644)

Telephonic communications

Echo cancellation or suppression

C379S402000, C379S403000, C379S404000, C379S405000

Reexamination Certificate

active

06917682

ABSTRACT:
Echo cancelling in a communication line system, particularly an ISDN or XDSL system, is performed with a tunable hybrid having tunable passive elements. The tunable hybrid is integrated in the analog front-end portion of the communication line system. The values of the tunable passive elements are digitally controlled by a microprocessor.

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