A Perspective on Stereophonic Acoustic Echo Cancellation

Name: A Perspective on Stereophonic Acoustic Echo Cancellation
SKU: 11486100
Price: 291.00 NZD
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Hardback

Series:

Springer Topics in Signal Processing

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Description

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.

Release date NZ

July 25th, 2011

Author

Audience

Professional & Vocational

Illustrations

VI, 139 p.

Pages

139

Series

Springer Topics in Signal Processing

Dimensions

155x235x13

ISBN-13

9783642225734

Product ID

11486100

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