Comparison of two microphone array geometries for surface impedance estimation

Antoine Richard, Efren Fernandez-Grande

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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 languageEnglish
JournalJournal of the Acoustical Society of America
Issue number1
Pages (from-to)501-504
Publication statusPublished - 1 Jul 2019

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