Fundamentals of Spherical Array Processing (Springer Topics in Signal Processing, 16) - Softcover

Rafaely, Boaz

Softcover

ISBN 10: 3030076113 ISBN 13: 9783030076115

Publisher: Springer, 2019

Synopsis

Presents cutting-edge theory and algorithms for spherical microphone arrays, including implementation examples and simulations with Matlab

Relevant for a broad range of applications in audio and acoustics, like speech communication, music recording, room acoustics, acoustic holography, virtual acoustics and binaural sound reproduction

Also relevant for other areas such as image processing and geodesy 

About this title

From the Back Cover

This book provides a comprehensive introduction to the theory and practice of spherical microphone arrays, and was written for graduate students, researchers and engineers who work with spherical microphone arrays in a wide range of applications. The new edition includes additions and modifications, and references supplementary Matlab code to provide the reader with a straightforward start for own implementations. The book is also accompanied by a Matlab manual, which explains how to implement the examples and simulations presented in the book.

The first two chapters provide the reader with the necessary mathematical and physical background, including an introduction to the spherical Fourier transform and the formulation of plane-wave sound fields in the spherical harmonic domain. In turn, the third chapter covers the theory of spatial sampling, employed when selecting the positions of microphones to sample sound pressure functions in space.

Subsequent chapters highlight various spherical array configurations, including the popular rigid-sphere-based configuration. Beamforming (spatial filtering) in the spherical harmonics domain, including axis-symmetric beamforming, and the performance measures of directivity index and white noise gain are introduced, and a range of optimal beamformers for spherical arrays, including those that achieve maximum directivity and maximum robustness are developed, along with the Dolph–Chebyshev beamformer. The final chapter discusses more advanced beamformers, such as MVDR (minimum variance distortionless response) and LCMV (linearly constrained minimum variance) types, which are tailored to the measured sound field.

Edition details

• Publisher: Springer
• Publication date: 2019
• Language: English
• ISBN 10: 3030076113
• ISBN 13: 9783030076115
• Binding: Paperback
• Edition number: 2
• Number of pages: 205