Advances in Network and Acoustic Echo Cancellation

1. Front Matter

   Pages I-XII

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2. An Introduction to the Problem of Echo in Speech Communication

   • Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

   Pages 1-30

3. A Family of Robust PNLMS-Like Algorithms for Network Echo Cancellation

   • Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

   Pages 31-54

4. A Robust Fast Recursive Least-Squares Adaptive Algorithm

   • Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

   Pages 55-64

5. Dynamic Resource Allocation for Network Echo Cancellation

   • Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

   Pages 65-77

6. Multichannel Acoustic Echo Cancellation

   • Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

   Pages 79-101

7. A Fast Normalized Cross-Correlation DTD Combined with a Robust Multichannel Fast Recursive Least-Squares Algorithm

   • Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

   Pages 103-132

8. Some Practical Aspects of Stereo Teleconferencing System Implementation

   • Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

   Pages 133-156

9. General Derivation of Frequency-Domain Adaptive Filtering

   • Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

   Pages 157-176

10. Multichannel Acoustic Echo and Double-Talk Handling: A Frequency-Domain Approach

    • Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

    Pages 177-200

11. Linear Interpolation Applied to Adaptive Filtering

    • Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

    Pages 201-210

12. Back Matter

    Pages 211-222

    PDF

For many decades, hybrid devices have been used to connect 2-wire local circuits and 4-wire long distance circuits in telephone lines. This leads to a weIl known problem, whereby echoes are generated. The delay introduced by telecommunication satellites exacerbated this problem and the need for new methods of echo control soon became obvious. The best solution to date for solving this problem was invented in the 1960s at Bell Labs by Kelly, Logan, and Sondhi, and consists of identifying the echo path generated by the hybrid by means of an adaptive filter, a technique that became known as an echo canceler. The echo canceler allowed full-duplex communication which was not possible with older echo suppression techniques. Later, with the development of hands-free teleconferencing systems, an­ other echo problem appeared; but this time the echo was due to the coupling between the loudspeaker and microphone. It is not surprising that the same solution was proposed to solve this problem, and most of today's telecon­ ferencing systems have an acoustic echo canceler. More recently, attention has been given to the very interesting problem of multichannel acoustic echo cancellation, which leads to more exciting applications that take advantage of our binaural auditory system.

• Acoustics
• Interpolation
• Signals
• communication
• filtering

From the reviews of the first edition:

"Adaptive filtering is now part and parcel of wide range of research, development and production systems. … here is one of the more useful and usable publications the reviewer has read. All-in-all, reading the book would be a worthwhile activity for anyone actively working with adaptive signal processing … ." (Scott D Snyder, The Physicist, Vol. 38 (6), 2001)

"This book is clearly and well written and will be of great interest to those interested in adaptive filtering and echo cancellation. It is a fine piece of engineering showing the impact of practical considerations and numerical aspects of optimization algorithms and their implementation." (A. Akutowicz, Zentralblatt MATH, Vol. 965, 2001)

• Bell Labs, Lucent Technologies, Murray Hill, USA

  Jacob Benesty, Tomas Gänsler, Dennis R. Morgan, M. Mohan Sondhi, Steven L. Gay

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