Method and system for low delay echo cancelling

Details Method and system for low delay echo cancelling Method and system for low delay echo cancelling

2006-07-13

2010-10-26

Tsang, Fan (Department: 2614)

Telephonic communications

Echo cancellation or suppression

Using digital signal processing

C725S149000

Reexamination Certificate

active

07822194

ABSTRACT:
The present invention relates to an audio communication system and method with improved acoustic characteristics. It combines the benefits from full band echo cancellers and sub-band echo cancellers, by merging the filter taps of sub-band filters into the respective full-band filter taps, which is being used to generate the inverted echo estimate in the echo canceller.

REFERENCES:
patent: 5014232 (1991-05-01), André
patent: 2004/0088742 (2004-05-01), LeBlanc et al.
patent: 2004/0161101 (2004-08-01), Yiu et al.
patent: 0746133 (1996-12-01), None
patent: WO 2005062595 (2005-07-01), None

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