A Review of High-performance Beamforming Methods for Acoustic Source Identification

doi:10.3901/JME.2021.24.166

Abstract

Abstract: Beamforming acoustic source identification technology based on microphone array measurements is widely used in military, industrial, environmental and other fields. For the goals of enhancing spatial resolution capability, suppressing parasitic false sources, improving localization and quantification accuracy, strengthening robustness, and perfecting identification function, a lot of researches have been conducted and fruitful achievements have been obtained. Three categories of state-of-the-art high-performance methods, including deconvolution beamforming, functional beamforming and compressive beamforming, are proposed successively. To help domestic scholars comprehensively understand and popularize these methods, their core ideas are systematically expounded and important research progresses are comprehensively reviewed. Deconvolution beamforming methods are scientifically classified according to the number of array point spread functions to be calculated. Compressive beamforming methods are scientifically classified according to the type of grid points to be used. Both planar and spherical microphone arrays are covered. The former is suitable for identifying acoustic sources in a local region in front of the array, and the latter is suitable for 360° panoramically identifying acoustic sources.

Key words: acoustic source identification, deconvolution beamforming, functional beamforming, compressive beamforming, planar microphone array, spherical microphone array

CLC Number:

TB52

YANG Yang, CHU Zhigang. A Review of High-performance Beamforming Methods for Acoustic Source Identification[J]. Journal of Mechanical Engineering, 2021, 57(24): 166-183.

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