By Boaz Rafaely
This ebook offers a accomplished creation to the speculation and perform of round microphone arrays. it truly is written for graduate scholars, researchers and engineers who paintings with round microphone arrays in quite a lot of applications.
The first chapters give you the reader with the required mathematical and actual history, together with an creation to the round Fourier rework and the formula of plane-wave sound fields within the round harmonic area.
The 3rd bankruptcy covers the idea of spatial sampling, hired while determining the positions of microphones to pattern sound strain services in house. next chapters current a number of round array configurations, together with the preferred rigid-sphere-based configuration. Beamforming (spatial filtering) within the round harmonics area, together with axis-symmetric beamforming, and the functionality measures of directivity index and white noise achieve are brought, and quite a number optimum beamformers for round arrays, together with beamformers that in attaining greatest directivity and greatest robustness, and the Dolph-Chebyshev beamformer are constructed. the ultimate bankruptcy discusses extra complex beamformers, akin to MVDR and LCMV, that are adapted to the measured sound field.
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Fundamentals of Spherical Array Processing (Springer Topics in Signal Processing) by Boaz Rafaely