Acoustic Array Systems : Theory, Implementation, and Application.
Mingsian R. Bai
Bok Engelsk 2013 · Electronic books.
| Omfang | 1 online resource (538 pages)
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|---|---|
| Utgave | 1st ed.
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| Opplysninger | ACOUSTIC ARRAY SYSTEMS: THEORY, IMPLEMENTATION, AND APPLICATION -- Contents -- Preface -- Acknowledgments -- Glossary: Symbols and Abbreviations -- 1 Introduction -- 1.1 Background and Motivation -- 1.2 Review of Prior Approaches for Noise Identification Problems -- 1.3 Organization of the Book -- References -- 2 Theoretical Preliminaries of Acoustics -- 2.1 Fundamentals of Acoustics -- 2.2 Sound Field Representation Using Basis Function Expansion -- 2.3 Sound Field Representation Using Helmholtz Integral Equation -- 2.4 Inverse Problems and Ill-Posedness -- References -- 3 Theoretical Preliminaries of Array Signal Processing -- 3.1 Linear Algebra Basics -- 3.2 Digital Signal Processing Basics -- 3.3 Array Signal Processing Basics -- 3.4 Optimization Algorithms -- 3.5 Inverse Filtering from a Model Matching Perspective -- 3.6 Parameter Estimation Theory -- 3.6.1 Classical Approaches -- 3.6.2 Bayesian Approaches -- References -- 4 Farfield Array Signal Processing Algorithms -- 4.1 Low-Resolution Algorithms -- 4.1.1 Fourier Beamformer -- 4.1.2 Time Reversal Beamformer -- 4.1.3 SIMO-ESIF Algorithm -- 4.1.4 Choice of Farfield Array Parameters -- 4.2 High-Resolution Algorithms -- 4.2.1 Minimum Variance Beamformers -- 4.2.2 Optimal Arrays -- 4.2.3 DMA Versus GSC -- 4.2.4 Auto-Regressive Array Design -- 4.2.5 Multiple Signal Classification (MUSIC) -- 4.2.6 Choice of Parameters in MUSIC -- 4.3 Comparison of the Farfield Algorithms -- References -- 5 Nearfield Array Signal Processing Algorithms -- 5.1 Fourier NAH -- 5.2 Basis Function Model (BFM)-based NAH -- 5.2.1 Spherical Waves -- 5.2.2 HELS Method: A Single-Point Multipole Method -- 5.3 BEM-based NAH (IBEM): Direct and Indirect Formulations -- 5.3.1 Direct IBEM Formulation -- 5.3.2 Indirect IBEM Formulation -- 5.3.3 Detailed Exposition of the Direct BEM-based NAH.. - 5.4 Equivalent Source Model (ESM)-based NAH -- 5.4.1 Indirect ESM -- 5.4.2 ESM Combined with BEM-based NAH -- 5.4.3 Direct ESM -- 5.4.4 Nearfield Equivalent Source Imaging (NESI) -- 5.4.5 Kalman Filter-based Algorithm -- 5.4.6 Choice of Nearfield Array Parameters -- 5.5 Comparison of the Nearfield Algorithms -- References -- 6 Practical Implementation -- 6.1 Inverse Filter Design -- 6.1.1 Model Matching: Ill-Posedness and Regularization -- 6.1.2 Window Design -- 6.1.3 Parameter Choice Methods (PCM) -- 6.2 Multi-Channel Fast Filtering -- 6.2.1 The Time-Domain Processing -- 6.2.2 The Frequency-Domain Processing -- 6.2.3 Comparison of Filtering Approaches -- 6.3 Post-Processing -- 6.3.1 Acoustic Variables -- 6.3.2 Processing of Moving Sources -- 6.4 Choice of Distance of Reconstruction and Lattice Spacing -- 6.5 Virtual Microphone Technique: Field Interpolation and Extrapolation -- 6.5.1 Sound Field Interpolation by ESM -- 6.5.2 More Resolution-Enhancing Reconstruction Strategies -- 6.6 Choice of Retreat Distance -- 6.6.1 Integral Approximation Error vs. Reconstruction Ill-Posedness -- 6.6.2 Determination of RD: Golden Section Search -- 6.7 Optimization of Sensor Deployment: Uniform vs. Random Array -- 6.7.1 Optimal Nearfield Array: Cost Functions -- 6.7.2 Optimizing Nearfield Sensor Deployment -- 6.7.3 Optimizing Farfield Sensor Deployment -- 6.7.4 Array Sensor Deployment in the Measurement Field Revisited -- 6.8 System Integration and Experimental Arrangement -- References -- 7 Time-Domain MVDR Array Filter for Speech Enhancement -- 7.1 Signal Model and Problem Formulation -- 7.1.1 Signal Model for Noise Reduction -- 7.1.2 Signal Model for Joint Reverberation and Noise Reduction -- 7.1.3 Decomposition of the Noise Signal -- 7.2 Linear Array Model -- 7.3 Performance Measures -- 7.3.1 Input SNR -- 7.3.2 Output SNR and Array Gain.. - 7.3.3 Noise Reduction Factor -- 7.3.4 Speech Reduction Factor -- 7.3.5 Speech Distortion Index -- 7.3.6 MSE Criterion -- 7.3.7 Discussion -- 7.4 MVDR Filter -- 7.5 Link With Other Filters -- 7.5.1 Link with Wiener -- 7.5.2 Link with the LCMV -- 7.6 Further Results -- 7.6.1 Noncausal Filters -- 7.6.2 Noise Reduction with Filtering Matrices -- References -- 8 Frequency-Domain Array Beamformers for Noise Reduction -- 8.1 Signal Model and Problem Formulation -- 8.2 Linear Array Model -- 8.3 Performance Measures -- 8.3.1 Input SNR -- 8.3.2 Output SNR and Array Gain -- 8.3.3 Noise Rejection and Desired Signal Cancellation -- 8.3.4 Speech Distortion Index -- 8.3.5 Beampattern -- 8.3.6 Directivity -- 8.3.7 White Noise Gain -- 8.3.8 MSE Criterion -- 8.4 Optimal Beamformers -- 8.4.1 Maximum SNR -- 8.4.2 Wiener -- 8.4.3 MVDR -- 8.4.4 Tradeoff -- 8.4.5 LCMV -- 8.5 Particular Case: Single Microphone -- References -- 9 Application Examples -- 9.1 Scooter: Transient Sources -- 9.2 Compressor -- 9.2.1 Test Setup and Measurements -- 9.2.2 Optimal Selection of Measurement Points Using EfI Method -- 9.2.3 Reconstructed Source Parameters -- 9.2.4 Summary and Conclusions -- 9.3 Vacuum Cleaner -- 9.3.1 Experimental Setup and Measurements -- 9.3.2 Regeneration of Field Data -- 9.3.3 Reconstruction of Source Field -- 9.3.4 Summary and Conclusions -- 9.4 Automotive Internal Combustion Engine -- 9.4.1 Experimental Setup and Boundary Element Modeling -- 9.4.2 Regeneration of Field Data -- 9.4.3 Reconstruction of Source Field -- 9.4.4 Post Processing: Power Contribution Analysis of Engine Parts -- 9.4.5 Summary and Conclusions -- 9.5 Transient Wave Propagation Over an Impacted Thin Plate -- 9.5.1 Vibrational Response of an Impacted Thin Plate -- 9.5.2 Experimental Setup and Signal Conditioning -- 9.5.3 Effect of Numerical Treatments.. - 9.5.4 Calculation of Structural Intensity Field -- 9.6 IT Equipment -- 9.7 Wooden Box -- 9.8 Non-contact Modal Analysis -- 9.9 Speech Enhancement in Reverberant Environments -- 9.9.1 Equivalent Source Inverse Filtering -- 9.9.2 Adaptive GSC-Enhanced SIMO-ESIF Algorithm -- 9.9.3 Array Performance Measures -- 9.9.4 Objective and Subjective Performance Evaluations -- 9.10 Impact Localization and Haptic Feedback for a Touch Panel -- 9.10.1 Bending Waves in a Finite Thin Plate -- 9.10.2 Impact Source Localization and Haptic Feedback -- 9.10.3 Experimental Investigations -- 9.11 Intelligent Stethoscope: Blind Beamforming -- 9.12 Rendering and Control of Sound Field by Array Speakers -- 9.12.1 Various Methods for Sound Reproduction and Field Rendering -- 9.12.2 Basic Theory of Sound Field Rendering by Inverse Design Concept -- 9.12.3 Test Examples of Sound Field Rendering by Array Speakers -- 9.12.4 Concluding Remarks -- 9.13 Sound Field Reconstruction Using ESM and BFM -- 9.13.1 Introduction -- 9.13.2 ESM-Based Approach -- 9.13.3 Virtual Microphone Interpolation Technique -- 9.13.4 BFM Interpolation Technique -- 9.13.5 Headwind Detection -- 9.13.6 Optimization of Retraction Distance -- 9.13.7 Numerical Simulations -- 9.13.8 Experimental Investigations -- 9.13.9 Conclusion -- References -- 10 Concluding Remarks and Future Perspectives -- 10.1 Concluding Remarks -- 10.2 Future Perspectives -- 10.2.1 Practical Issues -- 10.2.2 Inverse FRF Method -- 10.2.3 New Systems -- 10.2.4 More Application Scenarios -- 10.2.5 Epilog -- References -- Appendix: Acoustic Boundary Element Method -- A.1 Introduction -- A.2 Kirchhoff-Helmholtz Integral Equation -- A.3 Discretization -- A.4 Solution Strategy of Acoustic Boundary Element Method -- A.5 Nonuniqueness Problem -- References -- Index.. - Presents a unified framework of far-field and near-field array techniques for noise source identification and sound field visualization, from theory to application. Acoustic Array Systems: Theory, Implementation, and Application provides an overview of microphone array technology with applications in noise source identification and sound field visualization. In the comprehensive treatment of microphone arrays, the topics covered include an introduction to the theory, far-field and near-field array signal processing algorithms, practical implementations, and common applications: vehicles, computing and communications equipment, compressors, fans, and household appliances, and hands-free speech. The author concludes with other emerging techniques and innovative algorithms. Encompasses theoretical background, implementation considerations and application know-how Shows how to tackle broader problems in signal processing, control, and transudcers Covers both farfield and nearfield techniques in a balanced way Introduces innovative algorithms including equivalent source imaging (NESI) and high-resolution nearfield arrays Selected code examples available for download for readers to practice on their own Presentation slides available for instructor use A valuable resource for Postgraduates and researchers in acoustics, noise control engineering, audio engineering, and signal processing.
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| Emner | |
| Sjanger | |
| Dewey | |
| ISBN | 9780470827246
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| ISBN(galt) |
