Subband echo cancellation method using projection algorithm

Details Subband echo cancellation method using projection algorithm Subband echo cancellation method using projection algorithm

1996-04-17

1998-10-06

Chang, Vivian

Electrical audio signal processing systems and devices

Dereverberators

379410, 370291, H04B 320

Patent

active

058189459

ABSTRACT:
A received signal is output to an echo path and, at the same time, it is divided into a plurality of subbands to generate subband received signals, which are applied to estimated echo paths in the respective subbands to produce echo replicas. The echo having propagated over the echo path is divided into a plurality of subbands to generate subband echoes, from which the corresponding echo replicas are subtracted to produce misalignment signals. Based on the subband received signal in each subband and the misalignment signal corresponding thereto, a coefficient to be provided to each estimated echo path is adjusted by a projection or ES projection algorithm.

REFERENCES:
patent: 5272695 (1993-12-01), Makino et al.
Ozeki et al., An Adapative Filtering Algorithm Using an Orthogonal Projection to an Affine Subspace and its Properties, Electronics and Communications In Japan, vol. 67-A, No. 5, 1984, pp. 19-27.

Affiliated with

Also associated with

Rating

Subband echo cancellation method using projection algorithm does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Subband echo cancellation method using projection algorithm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subband echo cancellation method using projection algorithm will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-87777