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Convention Paper

Modelling Acoustic Room Interaction for Pistonic and Distributed-Mode Loudspeakers in the Correlation Domain

Authors: Harris, Neil

AES Convention 117 · Paper 6180 · October 2004

Abstract

AES paper 5732 presented a mesh-less, analytic 3-D solution to the problem of an acoustic source located in a nonanechoic room. By applying the inverse Fourier transform, temporal data was extracted to form a complete time and frequency domain description. This paper uses the same model to investigate the correlation properties of the acoustic radiation. Maps are produced, showing how the correlation varies with position in space. Statistical analysis suggests a possible objective classification of the diffuseness of acoustic fields by scalar quantities such as mean and standard deviation of correlation coefficient values. The distribution of correlation values is seen to follow the beta distribution quite closely.

Details

Published in
AES Convention 117
AES Convention
117
Paper number
6180
Publication date
October 6, 2004
Session subject
Loudspeakers
Affiliation
New Transducers Ltd (NXT), Huntingdon, England (See document for exact affiliation information.)
Type
Convention Paper