Strategies for combining acoustic echo cancellation and adaptive beamforming microphone arrays

Author

Kellermann, Walter

Author_Institution

Fachhochschule Regensburg, Germany

Volume

1

fYear

1997

fDate

21-24 Apr 1997

Firstpage

219

Abstract

New concepts for efficient combination of acoustic echo cancellation (AEC) and adaptive beamforming microphone arrays (ABMA) are presented. By decomposing common beamforming methods into a time-invariant part, which the AEC can integrate, and a separate time-variant part, the number of echo cancellers is minimized without rendering the system identification problem more difficult. Methods for controlling the interaction of ABMA and AEC are outlined and implementations for typical microphone array applications are discussed

Keywords

acoustic signal processing; acoustic transducer arrays; array signal processing; direction-of-arrival estimation; echo suppression; microphones; acoustic echo cancellation; adaptive beamforming microphone arrays; beamforming methods; echo cancellers; hands-free telecommunication system; microphone array applications; system identification problem; time-invariant method; time-variant method; Acoustic arrays; Adaptive arrays; Array signal processing; Attenuation; Echo cancellers; Frequency; Loudspeakers; Microphone arrays; Samarium; Sensor arrays;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

Conference_Location

Munich

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.599608

Filename

599608