Comparison of two microphone array geometries for surface impedance estimation

Antoine Richard; Efren Fernandez-Grande

doi:10.1121/1.5116705

Comparison of two microphone array geometries for surface impedance estimation

Antoine Richard
, Efren Fernandez-Grande

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Abstract

This study examines the estimation of the surface impedance of an absorber with microphone arrays. Two array geometries are compared - a rigid spherical array and a double layer planar array. The impedance is estimated via reconstructing the sound field (pressure and particle velocity) on the absorber's surface, using a plane wave expansion. The comparison is carried out by studying the numerical properties of the two arrays as well as through experimental tests.

Original language	English
Journal	Journal of the Acoustical Society of America
Volume	146
Issue number	1
Pages (from-to)	501-504
ISSN	0001-4966
DOIs	https://doi.org/10.1121/1.5116705
Publication status	Published - 1 Jul 2019

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abstract = "This study examines the estimation of the surface impedance of an absorber with microphone arrays. Two array geometries are compared - a rigid spherical array and a double layer planar array. The impedance is estimated via reconstructing the sound field (pressure and particle velocity) on the absorber's surface, using a plane wave expansion. The comparison is carried out by studying the numerical properties of the two arrays as well as through experimental tests.",

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AB - This study examines the estimation of the surface impedance of an absorber with microphone arrays. Two array geometries are compared - a rigid spherical array and a double layer planar array. The impedance is estimated via reconstructing the sound field (pressure and particle velocity) on the absorber's surface, using a plane wave expansion. The comparison is carried out by studying the numerical properties of the two arrays as well as through experimental tests.

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Comparison of two microphone array geometries for surface impedance estimation

Abstract

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