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Book Cover
Author Grimm, Simon, author.

Title Directivity based multichannel audio signal processing for microphones in noisy acoustic environments / Simon Grimm.

Published Wiesbaden : Springer Vieweg, 2019.


Location Call No. Status
Physical description 1 online resource (xi, 127 pages) : illustrations.
Series Schriftenreihe der Institute für Systemdynamik (IDS) und optische Systeme (ISO), 2661-8087
Schriftenreihe der Institute für Systemdynamik (IDS) und optische Systeme (ISO), 2661-8087
Springer Engineering eBooks 2019 English+International
Contents Intro; Acknowledgements; Contents; Abstract; 1 Introduction; 1.1 Problem Statement; 1.2 Structure of the Thesis; 2 Noise Reduction using Multichannel Signal Processing Approaches; 2.1 Signal Model and Notation; 2.2 Constant Directivity Beamforming; 2.2.1 Microphone Arrangements; 2.2.2 Delay-and-Sum Beamforming; 2.2.3 Differential Beamforming; 2.2.4 Super Directive Beamforming; 2.3 Minimum Variance Beamforming; 2.3.1 The Linear Constrained Minimum Variance Beamformer; 2.3.2 The Minimum Variance Distortionless Response Beamformer; 2.3.3 The Relative Transfer Function Minimum Variance Beamformer
2.4 The Speech Distortion Weighted Multichannel Wiener Filter2.4.1 Minimum Mean Squared Error Solution; 2.4.2 Decomposition of the Multichannel Wiener Filter; 2.5 Summary; 3 The Generalized Multichannel Wiener Filter; 3.1 The Generalized MWF; 3.2 On the Output SNR; 3.2.1 Narrow-band SNR Considerations; 3.2.2 Broad-band SNR Considerations; 3.2.3 Broad-band SNR Dependence on the Overall Transfer Function; 3.3 Summary; 4 Directivity Based Reference for the Generalized Multichannel Wiener Filter; 4.1 G-MWF Reference Selection; 4.1.1 Distortionless Response Beamformer
4.1.2 Partial Equalization Approach4.2 Directivity Based G-MWF Reference Selection; 4.2.1 Delay-and-Sum Beamformer; 4.2.2 Partial Equalization with DSB Phase Reference; 4.2.3 Differential Beamforming Reference; 4.3 System Structure of the G-MWF; 4.4 Estimation of the Second Order Statistics for Speech and Noise; 4.5 TDOA Estimation; 4.6 Simulation Results; 4.6.1 Delay-and-Sum Reference; 4.6.2 Differential Beamforming Reference; 4.7 Summary; 5 Reference for the Binaural Multichannel Wiener Filter; 5.1 The Binaural Multichannel Wiener Filter; 5.2 Binaural Cues
5.2.1 Interaural Transfer Function5.2.2 Binaural Error Measures; 5.3 The Generalized Binaural Multichannel Wiener Filter; 5.3.1 The Generalization of the Binaural Multichannel Wiener Filter; 5.3.2 On the ITF Preservation of the G-BMWF; 5.4 Simulation Results; 5.4.1 SSNR and LSD; 5.4.2 Binaural Cues; 5.5 Summary; 6 Wind Noise Reduction for a Closely Spaced Microphone Array; 6.1 Wind Noise Reduction Algorithm; 6.1.1 Beamformer; 6.1.2 Special Cases; 6.1.3 PSD estimation; 6.1.4 Post Filter; 6.2 Simulation Results; 6.2.1 Coherence Properties; 6.2.2 Beamformer Output; 6.2.3 Post Filter Output
6.2.4 Wind Noise Only Scenario6.3 Summary; 7 Background Noise Simulation based on MIMO Equalization; 7.1 The Signal Model; 7.2 Equalization of the MIMO System; 7.3 Simulation and Measurement Results; 7.4 Summary; 8 Conclusions; Bibliography
Other author SpringerLink issuing body.
Subject Beamforming.
Source separation (Signal processing)
Electronic books.
Electronic books.
ISBN 9783658251529 (electronic bk.)
3658251522 (electronic bk.)
9783658251512 (print)
Standard Number 10.1007/978-3-658-25152-9