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Convention Paper

Polar Pattern Measurement and Representation with Surface Spherical Harmonics

Authors: Angus, James A. S.; Evans, Michael J.

AES Convention 104 · Paper 4717 · May 1998

Abstract

In this paper we present a new method of representing transducer polar patterns using Surface Spherical Harmonics. This technique has the advantage of providing an accurate representation of the polar pattern which can easily provide the polar pattern at an arbitrary angle. Furthermore, the representation can be efficiently measured. The paper explains Surface Spherical Harmonics and presents means of efficiently deriving them from measured data. The implication and applications are then discussed and finally some results of the analysis applied to polar pattern measurements are presented.

Details

Published in
AES Convention 104
AES Convention
104
Paper number
4717
Publication date
May 6, 1998
Session subject
Sound Reinforcement
Affiliation
Dept of Electronics University of York, York, UK ; Dept of engineering University of Reading, England, UK (See document for exact affiliation information.)
Type
Convention Paper