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Journal Article

Modeling the Transient Acoustic Field Radiated by a Loudspeaker

Authors: Chappell, D. J.; Geaves, G.; Henwood, D. J.; Harris, P. J.; Chakrabarti, R.

Journal of the Audio Engineering Society · Volume 56 · Issue 11 · pp. 956–971 · November 2008

Abstract

This research concentrates on determining the transient acoustic field of a loudspeaker by applying uncoupled finite-element and boundary-element methods. The well-known problem of instability when working in the time domain was avoided by using a Burton–Miller type integral equation formulation. The accuracy of the results shows that this approach is well suited for modeling loudspeakers. Stable results were obtained in all cases and they were reasonably accurate when the time step was smaller than or equal to the experimental sampling rate. Two examples of insights are provided: differing decay rates of various loudspeaker components, and the presence of the acoustic center.

Details

Publication
Journal of the Audio Engineering Society
Volume
56
Issue
11
Pages
956–971
Publication date
November 6, 2008
Affiliation
School of Computing and Mathematical Sciences, University of Brighton, Brighton, UK; B & W Group Ltd., Steyning Research Establishment, Steyning, West Sussex, UK (See document for exact affiliation information.)
Type
Journal Article