Acoustic echo and noise control : a practical approach / Eberhard Haensler, Gerhard Schmidt.

Format:

Book

Author/Creator:

Hänsler, E. (Eberhard)

Contributor:

Schmidt, Gerhard.

Series:

Adaptive and learning systems for signal processing, communications, and control.

Adaptive and learning systems for signal processing, communications, and control

Language:

English

Subjects (All):

Echo suppression (Telecommunication).

Acoustical engineering.

Physical Description:

1 online resource (474 p.)

Edition:

1st ed.

Place of Publication:

Hoboken, N.J. : Wiley-Interscience, c2004.

Language Note:

English

Summary:

Authors are well known and highly recognized by the "acoustic echo and noise community." Presents a detailed description of practical methods to control echo and noise Develops a statistical theory for optimal control parameters and presents practical estimation and approximation methods.

Contents:

List of Figures

List of Tables

Preface

Acknowledgments

Abbreviations and Acronyms

Part I: Basics

1 Introduction

1.1 Some History

1.2 Overview of the Book

2 Acoustic Echo and Noise Control Systems

2.1 Notation

2.2 Applications

3 Fundamentals

3.1 Signals

3.2 Acoustic Echoes

3.3 Standards

Part II: Algorithms

4 Error Criteria and Cost Functions

4.1 Error Criteria for Adaptive Filters

4.2 Error Criteria for Filter Design

4.3 Error Criteria for Speech Processing and Control Purposes

5 Wiener Filter

5.1 Time-Domain Solution

5.2 Frequency-Domain Solution

6 Linear Prediction

6.1 Normal Equations

6.2 Levinson{Durbin Recursion

7 Algorithms for Adaptive Filters

7.1 The Normalized Least Mean Square Algorithm

7.2 The Affine Projection Algorithm

7.3 The Recursive Least Squares Algorithm

7.4 The Kalman Algorithm

Part III: Acoustic Echo and Noise Control

8 Traditional Methods for Stabilization of Electroacoustic Loops

8.1 Adaptive Line Enhancement

8.2 Frequency Shift

8.3 Controlled Attenuation

9 Echo Cancellation

9.1 Processing Structures

9.2 Stereophonic and Multichannel Echo Cancellation

10 Residual Echo and Noise Suppression

10.1 Basics

10.2 Suppression of Residual Echoes

10.3 Suppression of Background Noise

10.4 Combining Background Noise and Residual Echo Suppression

11 Beamforming

11.1 Basics

11.2 Characteristics of Microphone Arrays

11.3 Fixed Beamforming

11.4 Adaptive Beamforming

Part IV: Control and Implementation Issues

12 System Control-Basic Aspects

12.1 Convergence versus Divergence Speed

12.2 System Levels for Control Design

13 Control of Echo Cancellation Systems

13.1 Pseudooptimal Control Parameters for the NLMS Algorithm

13.2 Pseudooptimal Control Parameters for the Affine Projection Algorithm

13.3 Summary of Pseudooptimal Control Parameters

13.4 Detection and Estimation Methods

13.5 Detector Overview and Combined Control Methods.

14 Control of Noise and Echo Suppression Systems

14.1 Estimation of Spectral Power Density of Background Noise

14.2 Musical Noise

14.3 Control of Filter Characteristics

15 Control for Beamforming

15.1 Practical Problems

15.2 Stepsize Control

16 Implementation Issues

16.1 Quantization Errors

16.2 Number Representation Errors

16.3 Arithmetical Errors

16.4 Fixed Point versus Floating Point

16.5 Quantization of Filter Taps

Part V: Outlook and Appendixes

17 Outlook

Appendix A: Subband Impulse Responses

A.1 Consequences for Subband Echo Cancellation

A.2 Transformation

A.3 Concluding Remarks

Appendix B: Filterbank Design

B.1 Conditions for Approximately Perfect Reconstruction

B.2 Filter Design Using a Product Approach

B.3 Design of Prototype Lowpass Filters

B.4 Analysis of Prototype Filters and the Filterbank System

References

Index.

Notes:

Description based upon print version of record.

Description based on PDF viewed 12/21/2015.

Includes bibliographical references (p. 423-440) and index.

ISBN:

9786610272839

9781280272837

128027283X

9780470314838

0470314834

9780471678397

0471678392

9780471678403

0471678406

OCLC:

57599449