System and method for echo assessment in a communication...

Details System and method for echo assessment in a communication... System and method for echo assessment in a communication...

2005-10-04

2005-10-04

Tran, Sinh (Department: 2644)

Telephonic communications

Echo cancellation or suppression

C379S406020, C379S406040, C379S406050, C379S406060, C379S406030

Reexamination Certificate

active

06952473

ABSTRACT:
A method includes receiving a plurality of packets from at least two voice packet streams. The method also includes generating at least two voice signals using the plurality of packets. Each voice signal is associated with one of the voice packet streams. In addition, the method includes identifying an echo of one of the voice signals in at least one other of the voice signals.

REFERENCES:
patent: 6618481 (2003-09-01), Schmidt
patent: 6640248 (2003-10-01), Jorgensen
patent: 6724736 (2004-04-01), Azriel
patent: 2002/0075818 (2002-06-01), Matsuo
patent: 2003/0231763 (2003-12-01), Lilliiott et al.
patent: 2004/0022394 (2004-02-01), Michaelis
patent: 2004/0052209 (2004-03-01), Ortiz
ITU-T G.131 standard, “Control of talker echo.”, Aug. 1996.
U.S. Appl. No. 10/251,702, “System and Method for Voice Quality Analysis,” filed by Yueh-ju Lee et al., Sep. 19, 2002.

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