Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Designing a Spherical Microphone Array for the Directional Analysis of Reflections and Reverberation

Authors: Gover, Bradford N.; Ryan, James G.; Stinson, Michael R.

AES Convention 115 · Paper 5862 · October 2003

Abstract

Spherical microphone array designs were investigated from the point of view of suitability for directional analysis of reverberant sound fields. Four array geometries (tetrahedron, cube, dodecahedron, geodesic sphere) were considered. Beamforming filters were designed using a constrained gain maximization process. The theoretical performance of each array was then predicted. A room acoustic simulator was used to help assess sufficient directionality and evaluate the suitability of each design. A 32-element geodesic sphere array was constructed and used to make directional measurements in real sound fields.

Details

Published in
AES Convention 115
AES Convention
115
Paper number
5862
Publication date
October 6, 2003
Session subject
Audio for Games (Invited Papers)
Affiliation
Institute for Research in Construction, National Research Council, Ottawa, Ontario, Canada ; Gennum Corporation, Kanata, Ontario,Canada ; Institute for Microstructural Sciences, National Research Council, Ottawa, Ontario, Canada (See document for exact affiliation information.)
Type
Convention Paper