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arXiv · 1904.08971

On Acoustic Modeling for Broadband Beamforming

Amit Chhetri·Mohamed Mansour·Wontak Kim·Guangdong Pan
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Abstract

In this work, we describe limitations of the free-field propagation model for designing broadband beamformers for microphone arrays on a rigid surface. Towards this goal, we describe a general framework for quantifying the microphone array performance in a general wave-field by directly solving the acoustic wave equation. The model utilizes Finite-Element-Method (FEM) for evaluating the response of the microphone array surface to background 3D planar and spherical waves. The effectiveness of the framework is established by designing and evaluating a representative broadband beamformer under realistic acoustic conditions.

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Amit Chhetri, Mohamed Mansour, Wontak Kim, Guangdong Pan. 2019-04-18. On Acoustic Modeling for Broadband Beamforming. https://arxiv.org/abs/1904.08971

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