Method and apparatus for multi-channel acoustic echo cancellatio

Details Method and apparatus for multi-channel acoustic echo cancellatio Method and apparatus for multi-channel acoustic echo cancellatio

1995-10-24

1997-08-26

Kuntz, Curtis

Electrical audio signal processing systems and devices

Dereverberators

381 941, H04B 320

Patent

active

056618131

ABSTRACT:
A variation in the cross-correlation between current received signals of different channels is extracted which corresponds to the cross-correlation between previous received signals, and the extracted variation is used as an adjustment vector to iteratively adjust the estimation of the impulse response of each echo path. Furthermore, by additionally providing a function of actively varying the cross-correlation between the received signals to such an extent as not to produce a jarring noise, it is possible to reconstruct acoustic signals by individual loudspeakers and utilize received signal added with the cross-correlation variation to obtain the adjustment vector for an estimated echo path vector.

REFERENCES:
patent: 3794766 (1974-02-01), Cox et al.
patent: 4131760 (1978-12-01), Christensen et al.
patent: 5323459 (1994-06-01), Hirano
patent: 5327496 (1994-07-01), Russell et al.
patent: 5473686 (1995-12-01), Virdee
patent: 5513265 (1996-04-01), Hirano

Affiliated with

Also associated with

Rating

Method and apparatus for multi-channel acoustic echo cancellatio 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 multi-channel acoustic echo cancellatio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for multi-channel acoustic echo cancellatio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1994026