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Journal Article

Design of Logarithmically Spaced Constant-Directivity Transducer Arrays

Authors: van der Wal, Menno; Start, Evert W.; de Vries, Diemer

Journal of the Audio Engineering Society · Volume 44 · Issue 6 · pp. 497–507 · June 1996

Abstract

An approach to array design is described which results in the construction of transducers with a frequency-independent directivity pattern. Frequency independence is achieved by truncating the effective array aperture in a frequency-dependent way. Logarithmic spacing of the transducers ensures maximum frequency coverage with a fixed number of transducers. This array design method can be used for microphone arrays as well as for loudspeaker arrays. Experiments with both a microphone and a loudspeaker array show that the predicted radiation patterns can be matched very closely in practice.

Details

Publication
Journal of the Audio Engineering Society
Volume
44
Issue
6
Pages
497–507
Publication date
June 6, 1996
Affiliation
Laboratory of Seismic and Acoustics, Delft University of Technology, Delft, The Netherlands (See document for exact affiliation information.)
Type
Journal Article