Immersive Audio Signal Processing

By: Sunil Bharitkar, Chris Kyriakakis

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Hardcover | 9 June 2006

At a Glance

Hardcover
232 Pages

Dimensions(cm)
23.5 x 15.88 x 0.64

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This graduate-level text lays out the foundation of DSP for audio and the fundamentals of auditory perception, then goes on to discuss immersive audio rendering and synthesis, the digital equalization of room acoustics, and various DSP implementations. It covers a variety of topics and up-to-date results in immersive audio processing research: immersive audio synthesis and rendering, multichannel room equalization, audio selective signal cancellation, multirate signal processing for audio applications, surround sound processing, psychoacoustics and its incorporation in audio signal processing algorithms for solving various problems, and DSP implementations of audio processing algorithms on semiconductor devices.

Industry Reviews

From the reviews:

"The textbook contains the prerequisites as well as a number of research results which are relevant in this field and is directed to audio engineers with academic level. ... The book is a state-of-the-art source in immersive audio, basing partially on former research papers of the authors." (Rudiger Hoffmann, Zentralblatt MATH, Vol. 1106 (8), 2007)

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You Can Find This Book In

Non-Fiction Computing & I.T.Computer Science Digital Signal Processing (DSP)Engineering & Technology Electronics & Communications Engineering Communications Engineering & Telecommunications Mathematics Applied Mathematics Artificial Intelligence Natural Language & Machine Translation Science

Physics Classical Mathematics Wave Mechanics including Vibration & Acoustics Energy Technology & Engineering Electrical Engineering Audio Processing Electronics Engineering

Preface	p. vii
Digital Signal Processing for Audio and Acoustics
Foundations of Digital Signal Processing for Audio and Acoustics	p. 3
Basics of Digital Signal Processing	p. 3
Discrete Time Signals and Sequences	p. 4
Linear Systems	p. 6
Time-Invariant Systems	p. 6
Linear and Time-Invariant Systems	p. 6
Fourier Transforms	p. 8
Transfer Function Representation	p. 10
The z-Transform	p. 14
Sampling and Reconstruction	p. 16
Ideal Sampling	p. 17
Reconstruction of Continuous Time Signals from Discrete Time Sequences	p. 18
Sampling Rate Reduction by an Integer Factor	p. 19
Increasing the Sampling Rate by an Integer Factor	p. 21
Resampling for Audio Applications	p. 22
Discrete Fourier Transform	p. 23
Bilinear Transform	p. 24
Summary	p. 25
Filter Design for Audio Applications	p. 27
Filter Design Process	p. 27
Desired Response Specification	p. 27
Approximating Error Function	p. 28
FIR Filter Design	p. 28
Linear Phase Filter Design	p. 29
Least Squares FIR Filter Design	p. 29
FIR Windows for Filter Design	p. 30
Adaptive FIR Filters	p. 35
IIR Filter Design	p. 36
All-Pass Filters	p. 37
Butterworth Filters	p. 37
Chebyshev Filters	p. 38
Elliptic Filters	p. 40
Shelving and Parametric Filters	p. 40
Autoregressive or All-Pole Filters	p. 44
Summary	p. 46
Acoustics and Auditory Perception
Introduction to Acoustics and Auditory Perception	p. 49
Sound Propagation	p. 49
Acoustics of a Simple Source in Free-Field	p. 50
Modal Equations for Characterizing Room Acoustics at Low Frequencies	p. 51
Axial, Tangential, Oblique Modes and Eigenfrequencies	p. 53
Reverberation Time of Rooms	p. 54
Room Acoustics from Schroeder Theory	p. 60
Measurement of Loudspeaker and Room Responses	p. 61
Room Response Measurement with Maximum Length Sequence (MLS)	p. 61
Room Response Measurement with Sweep Signals	p. 63
Psychoacoustics	p. 65
Structure of the Ear	p. 65
Loudness Perception	p. 66
Loudness Versus Loudness Level	p. 68
Time Integration	p. 68
Frequency Selectivity of the Ear	p. 70
Summary	p. 72
Immersive Audio Processing
Immersive Audio Synthesis and Rendering Over Loudspeakers	p. 75
Introduction	p. 75
Immersive Audio Synthesis	p. 77
Microphone Signal Synthesis	p. 77
Subjective Evaluation of Virtual Microphone Signals	p. 80
Spot Microphone Synthesis Methods	p. 80
Summary and Future Research Directions	p. 82
Immersive Audio Rendering	p. 83
Rendering Filters for a Single Listener	p. 83
Rendering Filters for Multiple Listeners	p. 87
Simulation Results	p. 94
Summary	p. 96
Multiple Position Room Response Equalization	p. 99
Introduction	p. 100
Background	p. 101
Single-Point Room Response Equalization	p. 102
Multiple-Point (Position) Room Response Equalization	p. 103
Designing Equalizing Filters Using Pattern Recognition	p. 105
Review of Cluster Analysis in Relation to Acoustical Room Responses	p. 105
Fuzzy c-means for Determining the Prototype	p. 105
Cluster Validity Index	p. 107
Multiple Listener Room Equalization with Low Filter Orders	p. 107
Visualization of Room Acoustic Responses	p. 109
The Sammon Map	p. 110
Results	p. 112
The Influence of Reverberation on Room Equalization	p. 121
Image Method	p. 121
RMS Average Filters	p. 121
Results	p. 122
Summary	p. 123
Practical Considerations for Multichannel Equalization	p. 125
Introduction	p. 126
Objective Function-Based Crossover Frequency Selection	p. 130
Phase Interaction Between Noncoincident Loudspeakers	p. 132
The Influence of Phase on the Net Magnitude Response	p. 134
Phase Equalization with All-Pass Filters	p. 134
Second-Order All-Pass Networks	p. 134
Phase Correction with Cascaded All-Pass Filters	p. 136
Results	p. 139
Objective Function-Based Bass Management Filter Parameter Optimization	p. 139
Results	p. 144
Multiposition Bass Management Filter Parameter Optimization	p. 146
Results	p. 147
Spectral Deviation and Time Delay-Based Correction	p. 150
Results for Spectral Deviation and Time Delay-Based Crossover Correction	p. 152
Summary	p. 153
Robustness of Equalization to Displacement Effects: Part I	p. 157
Introduction	p. 157
Room Acoustics for Simple Sources	p. 161
Mismatch Analysis for Spatial Average Equalization	p. 162
Analytic Expression for Mismatch Performance Function	p. 162
Analysis of Equalization Error	p. 165
Results	p. 166
Summary	p. 168
Robustness of Equalization to Displacement Effects: Part II	p. 171
Introduction	p. 171
Modal Equations for Room Acoustics	p. 172
Mismatch Analysis with Spatial Average Equalization	p. 172
Spatial Averaging for Multiple Listener Equalization	p. 172
Equalization Performance Due to Mismatch	p. 173
Results	p. 177
Magnitude Response Spatial Averaging	p. 177
Computation of the Quantum Numbers	p. 178
Theoretical Results	p. 180
Validation	p. 181
Magnitude Response Single-Listener Equalization	p. 183
Summary	p. 185
Selective Audio Signal Cancellation	p. 187
Introduction	p. 187
Traditional Methods for Acoustic Signal Cancellation	p. 189
Passive Techniques	p. 189
Active Techniques	p. 190
Parametric Loudspeaker Array	p. 191
Eigenfilter Design for Conflicting Listener Environments	p. 191
Background	p. 191
Determination of the Eigenfilter	p. 192
Theoretical Properties of Eigenfilters	p. 195
Results	p. 198
Eigenfilter Performance as a Function of Filter Order M	p. 198
Performance Sensitivity as a Function of the Room Response Duration	p. 202
Summary	p. 205
References	p. 209
Index	p. 213
Table of Contents provided by Ingram. All Rights Reserved.

Immersive Audio Signal Processing

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