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Journal Article

Sound Reinforcement by Wavefield Synthesis: Adaptation of the Synthesis Operator to the Loudspeaker Directivity Characteristics

Authors: de Vries, Diemer

Journal of the Audio Engineering Society · Volume 44 · Issue 12 · pp. 1120–1131 · December 1996

Abstract

Wavefield synthesis is a concept that enables the generation of sound fields with natural properties in time and space. The concept is applied to the reinforcement of direct sound. Wavefield synthesis is based on Rayleigh's representation theorem. In their original form, the discretized Rayleigh integrals prescribe the use of planar arrays of monopole- or dipole-type loudspeakers. It is shown that the theoretical synthesis operator can be modified such that a linear array of loudspeakers with arbitrary directivity characteristics can be used to generate a reinforced wavefield with natural properties in time and space. Since the derivation of the synthesis operator is based on array theory, defective characteristics of individual array loudspeakers cannot, or only in par;t, be corrected for by adapting the driving signal for these loudspeakers.

Details

Publication
Journal of the Audio Engineering Society
Volume
44
Issue
12
Pages
1120–1131
Publication date
December 6, 1996
Affiliation
Delft University of Technology, Laboratory of Seismics and Acoustics, Delft, The Netherlands (See document for exact affiliation information.)
Type
Journal Article