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Convention Paper

A Hybrid Method Combining Synthesis of a Sound Field and Control of Acoustic Contrast

Authors: Møller, Martin Bo; Olsen, Martin; Jacobsen, Finn

AES Convention 132 · Paper 8627 · April 2012

Abstract

Spatially confined regions with different sound field characteristics, in the following referred to as sound zones, may be desired in some situations. Recently, various sound field control methods for generating separate sound zones have been proposed in the literature. The different algorithms introduce different levels of control over the physical characteristics of the resulting sound fields. This paper introduces a hybrid of two existing methods employed for obtaining sound zones: 'Energy Difference Maximization' for control of the sound field energy distribution and 'Pressure Matching' which contributes with synthesis of a desired sound field. The hybrid method introduces a tradeoff between acoustic contrast between two sound zones and the degree to which the phase is controlled in the optimized sound fields.

Details

Published in
AES Convention 132
AES Convention
132
Paper number
8627
Publication date
April 6, 2012
Session subject
Quality Evaluation and Spatial Audio
Affiliation
Bang & Olufsen a/s, Struer, Denmark; Technical University of Denmark, Lyngby, Denmark (See document for exact affiliation information.)
Type
Convention Paper