Echo processing devices for single-channel or multichannel...

Details Echo processing devices for single-channel or multichannel... Echo processing devices for single-channel or multichannel...

2008-07-22

2008-07-22

Singh, Ramnandan (Department: 2614)

Telephonic communications

Echo cancellation or suppression

C379S406020

Reexamination Certificate

active

07403608

ABSTRACT:
An echo processing technique for attenuating echo components of a direct signal X1nin a return signal Y2n. A receive gain Grnand a send gain Genare calculated. The receive gain Grnis applied to the direct signal and an input signal X2nis produced and emitted into an echo generator system. The send gain Genis applied to an output signal Y1nfrom the echo generator system and the return signal Y2nis produced. A coupling variable COR is calculated which is characteristic of the acoustic coupling between the direct signal X1nor the input signal X2nand the output signal Y1n. The receive gain Grnand the send gain Genare calculated on the basis of the coupling variable.

REFERENCES:
patent: 5371789 (1994-12-01), Hirano
patent: 5646990 (1997-07-01), Li
patent: 5734715 (1998-03-01), Scalart et al.
patent: 5970137 (1999-10-01), Le Damany et al.
patent: 6246760 (2001-06-01), Makino et al.
patent: 2 738 695 (1997-03-01), None
patent: 2 748 184 (1997-10-01), None

Affiliated with

Also associated with

Rating

Echo processing devices for single-channel or multichannel... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Echo processing devices for single-channel or multichannel..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Echo processing devices for single-channel or multichannel... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2778823