System and method for echo cancellation in a communication syste

Details System and method for echo cancellation in a communication syste System and method for echo cancellation in a communication syste

1997-08-12

2000-11-14

Vu, Huy D.

Multiplex communications

Duplex

Transmit/receive interaction control

370286, 379410, H04B 323

Patent

active

061479799

ABSTRACT:
A system and method for echo cancellation in a communication system having a digital echo canceller and an analog echo canceller for analog reduction of cross coupling echo components in an analog output signal when in analog form before digital processing by the digital echo canceller. An analog cancellation signal is generated which is substantially the same as the acoustic coupling echo component in the analog output signal before digital processing by the digital echo canceller. The analog echo cancellation signal is combined with the analog output signal to reduce the cross coupling echo component before digital processing by the digital echo canceller.

REFERENCES:
patent: 4811342 (1989-03-01), Huang
patent: 5305307 (1994-04-01), Chu
patent: 5598468 (1997-01-01), Ammicht et al.
patent: 5633863 (1997-05-01), Gysel et al.
patent: 5859872 (1999-01-01), Townsend
patent: 5896452 (1999-04-01), Yip et al.
Dennis R. Morgan and James C. Thi, A Delayless Subband Adaptive Filter Architecture, Aug., 1995, IEEE Transactions on Signal Processing, vol. 43, No. 8.

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