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Optimisation of Co-centred Rigid and Open Spherical Microphone Arrays

We present a novel microphone array that consists of an open spherical array with a smaller rigid spherical array at its centre. The distribution of microphones, which results in the array having the largest frequency range, for a given beamforming order, was obtained by analysing microphone errors. For a fixed number of microphones, the results for several examples indicate that the maximum frequency range is obtained when the microphones are relatively evenly distributed between the open and rigid spheres.

Authors: Jin, Craig; Parthy, Abhaya; van Schaik, Andre
Affiliation: The University of Sydney
AES Convention:120 (May 2006) Paper Number:6764 Import into BibTeX
Session Subject:Signal Processing; High Resolution Audio

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