Method and apparatus for echo canceling with double-talk immunit

Details Method and apparatus for echo canceling with double-talk immunit Method and apparatus for echo canceling with double-talk immunit

1994-07-14

1996-07-09

Hsu, Alpus H.

Multiplex communications

Wide area network

Packet switching

379411, H04B 323, H04L 514

Patent

active

055351948

ABSTRACT:
A method and apparatus are provided for echo canceling which includes double-talk immunity. The echo canceller (15) according to the present invention includes a double-talk detector (17) which uses an adaptive double-talk detection threshold (214) and an accurate estimation of reference energy (106) to detect double-talk. The echo canceller further provides for correcting partial echo canceller adaptive filter vector divergence occurring prior to double-talk detection by maintaining and switching to an auxiliary echo canceller filter with known "good" filter coefficients (58, 60, 62).

REFERENCES:
patent: 4918727 (1990-04-01), Rohrs et al.
patent: 5295136 (1994-03-01), Ashley et al.

Affiliated with

Also associated with

Rating

Method and apparatus for echo canceling with double-talk immunit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for echo canceling with double-talk immunit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for echo canceling with double-talk immunit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1873832