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

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 en...

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Bibliographic Details
Published inSensor Array and Multichannel Signal Processing Workshop Proceedings, 2002 pp. 234 - 238
Main Authors van de Laar, J., Sommen, P.C.W.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2002
Subjects
Acoustics
Adaptive algorithm
Algorithm design and analysis
Couplings
Echo cancellers
Loudspeakers
Microphones
Performance analysis
Teleconferencing
Wiener filter
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Summary: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.
ISBN:0780375513
9780780375512
DOI:10.1109/SAM.2002.1191035