Adaptive filtering algorithms for stereophonic acoustic echo cancellation

Author

Benesty, J. ; Amand, F. ; Gilloire, A. ; Grenier, Y.

Author_Institution

Dept. Signal, Telecom Paris, France

Volume

5

fYear

1995

fDate

9-12 May 1995

Firstpage

3099

Abstract

It is likely that stereophonic (and more generally, multichannel) sound pick-up, transmission and diffusion will be implemented in future teleconference systems to provide the users with enhanced quality. Therefore, adequate solutions must be found to solve the problem of stereophonic acoustic echo which will occur in such systems. We explain in this paper the difference between the mono and two-channel systems and the behavior of the two-channel classical adaptive algorithms in comparison with the same algorithms in the mono-channel case. Also, we outline a new NLMS-like algorithm derived from the two-channel RLS algorithm as a first member of a family of improved two-channel adaptive filters

Keywords

acoustic signal processing; adaptive filters; audio coding; echo suppression; least squares approximations; recursive filters; stochastic processes; teleconferencing; NLMS-like algorithm; RLS algorithm; adaptive filtering algorithms; classical adaptive algorithms; enhanced quality; mono-channel system; recursive least squares approach; stereophonic acoustic echo cancellation; stochastic gradient approach; teleconference systems; two-channel system; Adaptive algorithm; Adaptive filters; Echo cancellers; Electronic mail; Filtering algorithms; MONOS devices; Microphones; Resonance light scattering; Telecommunications; Teleconferencing;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on

Conference_Location

Detroit, MI

ISSN

1520-6149

Print_ISBN

0-7803-2431-5

Type

conf

DOI

10.1109/ICASSP.1995.479501

Filename

479501