A Perspective on Stereophonic Acoustic Echo Cancellation
Author:   Jacob Benesty ,  Constantin Paleologu ,  Tomas Gänsler ,  Silviu Ciochină
Publisher:   Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
Volume:   4
ISBN:  

9783642225734


Pages:   139
Publication Date:   25 July 2011
Format:   Hardback
Availability:   Awaiting stock   Availability explained
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A Perspective on Stereophonic Acoustic Echo Cancellation


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Overview

Single-channel hands-free teleconferencing systems are becoming popular. In order to enhance the communication quality of these systems, more and more stereophonic sound devices with two loudspeakers and two microphones are deployed. Because of the coupling between loudspeakers and microphones, there may be strong echoes, which make real-time communication very difficult. The best way we know to cancel these echoes is via a stereo acoustic echo canceller (SAEC), which can be modelled as a two-input/two-output system with real random variables. In this work, the authors recast this problem into a single-input/single-output system with complex random variables thanks to the widely linear model. From this new convenient formulation, they re-derive the most important aspects of a SAEC, including identification of the echo paths with adaptive filters, double-talk detection, and suppression.

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Author:   Jacob Benesty ,  Constantin Paleologu ,  Tomas Gänsler ,  Silviu Ciochină
Publisher:   Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
Imprint:   Springer-Verlag Berlin and Heidelberg GmbH & Co. K
Volume:   4
Dimensions:   Width: 15.50cm , Height: 1.30cm , Length: 23.50cm
Weight:   0.422kg
ISBN:  

9783642225734


ISBN 10:   364222573
Pages:   139
Publication Date:   25 July 2011
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Hardback
Publisher's Status:   Active
Availability:   Awaiting stock   Availability explained
The supplier is currently out of stock of this item. It will be ordered for you and placed on backorder. Once it does come back in stock, we will ship it out for you.

Table of Contents

Introduction.- Problem Formulation.- System Identification with the Wiener Filter.- A Class of Stochastic Adaptive Filters.- A Class of Affine Projection Algorithms.- Recursive Least-Squares Algorithms.- Double-Talk Detection.- Echo and Noise Suppression as a Binaural Noise Reduction Problem.- Experimental Study.

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