Techniques to reduce echo

Details Techniques to reduce echo Techniques to reduce echo

2003-12-04

2008-03-25

Singh, Ramnandan (Department: 2614)

Multiplex communications

Duplex

Transmit/receive interaction control

C379S406010

Reexamination Certificate

active

07349353

ABSTRACT:
Briefly, techniques to control echo that utilize fixed and adaptive filters are described.

REFERENCES:
patent: 5663955 (1997-09-01), Iyengar
patent: 6980646 (2005-12-01), Demirekler et al.
patent: 2003/0053617 (2003-03-01), Diethorn
International Telecommunication Union, Telecommunication Standardization Sector (ITU-T), “Digital Network Echo Cancellers, Series G: Transmission Systems and Media, Digital Systems and Networks, International Telephone Connections and Circuits—Apparatus Associated with Long-Distance Telephone Circuits”, ITU-T Recommendation G.168, Apr. 2000.

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