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Convention Paper

The Accuracy of Loudspeaker Array Sound Field Predictions Using Low-Resolution 1/3-Octave, 5Y Polar Data

Authors: Staffeldt, Henrik

AES Convention 109 · Paper 5263 · September 2000

Abstract

In a previous paper, a new method was presented that allowed a detailed prediction of array sound pressure fields when only low-resolution one-third-octave, 5o polar data was available for the individual loudspeakers in the array. The present paper investigates the accuracy of such predictions by comparing predicted and measured on- and off-axis frequency responses and polar patterns of a number of different array configurations. The predictions are based on complex summation of the sound pressure contributions from the individual loudspeakers in the array under the assumption that interaction effects, such as reflections, diffraction and shadowing among the loudspeakers in the array, are negligible. The way interaction effects can modify the array sound field and reduce the accuracy of the predictions is also discussed in the paper.:

Details

Published in
AES Convention 109
AES Convention
109
Paper number
5263
Publication date
September 6, 2000
Session subject
Instrumentation and Measurement
Affiliation
Technical University of Denmark, Lyngby, Denmark (See document for exact affiliation information.)
Type
Convention Paper