Joint optimization of loudspeaker placement and radiation patterns for Sound Field Reproduction

A new method is presented for optimizing loudspeaker placement, radiation patterns, and excitations for Sound Field Reproduction (SFR). A power constraint is included which is to help control the sound increase in the regions away from listening volume. For a known primary source, the loudspeaker lo...

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Bibliographic Details
Published in2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) pp. 519 - 523
Main Authors Khalilian, Hanieh, Bajic, Ivan V., Vaughan, Rodney G.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2015
Subjects
Antenna radiation patterns
Constrained Matching Pursuit
higher order loudspeakers
Indexes
Joints
Optimization
Production systems
Sound field reproduction
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Summary:A new method is presented for optimizing loudspeaker placement, radiation patterns, and excitations for Sound Field Reproduction (SFR). A power constraint is included which is to help control the sound increase in the regions away from listening volume. For a known primary source, the loudspeaker locations and patterns are jointly optimized by Constrained Matching Pursuit (CMP), and this can be undertaken offline, i.e., before system operation. The excitations of the designed loudspeakers are then determined by conventional Lagrangian optimization. Simulations for free space conditions show that the new method yields a lower reproduction error under a power constraint than other SFR methods.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2015.7178023