Richard Antoine, Fernandez-Grande Efren
Acoustic Technology, Department of Electrical Engineering, Technical University of Denmark (DTU), Building 352, DK-2800 Kongens Lyngby, Denmark.
J Acoust Soc Am. 2019 Jul;146(1):501. doi: 10.1121/1.5116705.
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.
