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TECHNICAL PAPERS

Active Control of Low-Frequency Sound Radiation From Vibrating Panel Using Planar Sound Sources

[+] Author and Article Information
Kean Chen

P.O. Box 19, Institute of Environmental Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, P.R. Chinae-mail: kachen@nwpu.edu.cn

Gary H. Koopmann

Center for Acoustics and Vibration, The Pennsylvania State University, 157 Hammond building, University Park, PA 16802e-mail: ghk@kirkof.psu.edu

J. Vib. Acoust 124(1), 2-9 (Jul 01, 2001) (8 pages) doi:10.1115/1.1420197 History: Received December 01, 2000; Revised July 01, 2001
Copyright © 2002 by ASME
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References

Figures

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Configuration of active control of sound radiation using secondary panels
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The coupling force due to the perturbation pressure
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Sound power radiated by the primary panel
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Configuration of arrangement of secondary panels
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Active reduction in sound power using one secondary panel A1
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Active reduction in modal sound power using one secondary panel (A1 and A2)
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Illustration of active control when the primary and secondary panel radiate in (odd, odd) modes
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Active control of modal sound power using one secondary panel (A1)
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Active control of modal sound power using two secondary panels (B1 and B2)
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Active control of modal sound power using four secondary panels (C1)
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Active control of sound power versus frequency using four secondary panels (C1)
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Amplitude of the input forces applied to the secondary panels versus frequency

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