Performance analysis of multi-channel adaptive algorithms operating in a non-stationary acoustic teleconferencing setup

Author

van de Laar, J. ; Sommen, P.C.W.

Author_Institution

Dept. of Electr. Eng., Technische Universiteit Eindhoven, Netherlands

fYear

2002

fDate

4-6 Aug. 2002

Firstpage

234

Lastpage

238

Abstract

Several important issues in multi-channel signal processing are discussed. It is shown that in some situations nonstationarity may help to solve problems that are unsolvable when assuming a stationary setup. In addition, the behavior of several adaptive algorithms operating in such non-stationary environments is analyzed and explained. The ideas are illustrated using the acoustic teleconferencing setup as a framework. Similar principles can be applied to other problems in acoustic telecommunication. Since the main goal of this paper is to provide insight, most of the theory is developed in terms of Wiener filtering and ensemble averaging operations.

Keywords

Wiener filters; adaptive filters; adaptive signal processing; loudspeakers; telecommunication channels; teleconferencing; Wiener filtering; acoustic telecommunication; ensemble averaging; loudspeaker correlation matrix; multichannel adaptive algorithms; nonstationary acoustic teleconferencing; performance analysis; Acoustics; Adaptive algorithm; Algorithm design and analysis; Couplings; Echo cancellers; Loudspeakers; Microphones; Performance analysis; Teleconferencing; Wiener filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensor Array and Multichannel Signal Processing Workshop Proceedings, 2002

Print_ISBN

0-7803-7551-3

Type

conf

DOI

10.1109/SAM.2002.1191035

Filename

1191035