In this work an extension to the pressure-matching beamforming method (PMM) that’s well-suited for transaural sound field control is presented. The method aims to improve performance at dark points, locations relative to the array where sound pressure is minimized; without producing noticeable artifacts at bright points, locations where acoustic interference is minimized. The method’s new performance priorities result from replacing Tikhonov regularization, which is conventionally used in PMM, with a purpose-built regularization strategy for solving the pseudoinverse of ill-conditioned matrices. Discussions of how this method’s formulation affects the filter design process and of performance comparisons between this and conventional PMM filters are included.

Authors: Afghah, Tahereh; Patros, Elliot; Puckette, Miller
Affiliation: University of California San Diego, San Diego, CA, USA
AES Convention: 145 (October 2018) Paper Number: 10052
Publication Date: October 7, 2018 Import into BibTeX
Subject: Signal Processing—Part 2
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=19778

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