Active control of low-frequency harmonic sound radiated by a finite panel
Active control of low-frequency harmonic sound radiated by a finite panel
Quadratic optimization theory is applied to determine the minimum sound power output of a simply supported panel in a baffle when the radiation is controlled with additional “secondary” monopole sources. The theory presented produces analytical results for the optimal complex strengths of the secondary sources and the resulting value of minimum power output. The results are valid in the low-frequency limit when the panel dimensions are much smaller than the wavelength of the radiated sound. The results demonstrate the importance of matching the secondary source distribution to the type of panel mode and can be explained using Maidanik's modal radiation classification scheme.
2192-2199
Deffayeta, C.
9145b735-4b6f-4b33-8d5f-32a3d6e031e5
Nelson, P. A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
11 December 1988
Deffayeta, C.
9145b735-4b6f-4b33-8d5f-32a3d6e031e5
Nelson, P. A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
Deffayeta, C. and Nelson, P. A.
(1988)
Active control of low-frequency harmonic sound radiated by a finite panel.
Journal of the Acoustical Society of America, 84 (6), .
(doi:10.1121/1.397066).
Abstract
Quadratic optimization theory is applied to determine the minimum sound power output of a simply supported panel in a baffle when the radiation is controlled with additional “secondary” monopole sources. The theory presented produces analytical results for the optimal complex strengths of the secondary sources and the resulting value of minimum power output. The results are valid in the low-frequency limit when the panel dimensions are much smaller than the wavelength of the radiated sound. The results demonstrate the importance of matching the secondary source distribution to the type of panel mode and can be explained using Maidanik's modal radiation classification scheme.
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Published date: 11 December 1988
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Copyright 2016 Elsevier B.V., All rights reserved.
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Local EPrints ID: 468663
URI: http://eprints.soton.ac.uk/id/eprint/468663
ISSN: 0001-4966
PURE UUID: 843d8016-c03a-4859-b163-5bd742d5fdea
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Date deposited: 19 Aug 2022 17:09
Last modified: 17 Mar 2024 02:32
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Author:
C. Deffayeta
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