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Convention Paper

Loudspeaker Cabinet Edge Diffraction

Authors: Porter, James; Geddes, Earl

AES Convention 85 · Paper 2730 · November 1988

Abstract

The theory of Geometric Optical Diffraction has been used to investigate the effects of sound diffraction at the edge of a loudspeaker cabinet (Bews and Hawksford, JAES). The asymptotic assumption of the optical theory is examined by the use of the finite element method. Comparisons are made between the two different methods indicating the accuracy of the optical method for perpendicular incidence of the sound wave. Experimental evidence indicates that the optical method is not correct for non-perpendicular incidence. An improved formulation of the optical method is proposed which yields results more consistent with experiments.

Details

Published in
AES Convention 85
AES Convention
85
Paper number
2730
Publication date
November 6, 1988
Session subject
Microphones and Loudspeakers
Affiliation
Eastern Michigan University, Ypsilanti, MI ; Ford Motor Company, Dearborn, MI (See document for exact affiliation information.)
Type
Convention Paper