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

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Chen, Kean Koopmann, Gary H.
Copyright Year	2002
Abstract	Active control of low frequency sound radiation using planar secondary sources is theoretically investigated in this paper. The primary sound field originates from a vibrating panel and the planar sources are modeled as simply supported rectangular panels in an infinite baffle. The sound power of the primary and secondary panels are calculated using a near field approach, and then a series of formulas are derived to obtain the optimum reduction in sound power based on minimization of the total radiate sound power. Finally, active reduction for a number of secondary panel arrangements is examined and it is concluded that when the modal distribution of the secondary panel does not coincide with that of the primary panel, one secondary panel is sufficient. Otherwise four secondary panels can guarantee considerable reduction in sound power over entire frequency range of interest.
Starting Page	2
Ending Page	9
Page Count	8
File Format	PDF
ISSN	10489002
e-ISSN	15288927
Journal	Journal of Vibration and Acoustics
Volume Number	124
Issue Number	1
DOI	10.1115/1.1420197
Language	English
Publisher	The American Society of Mechanical Engineers
Publisher Date	2001-07-01
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Radiation (Physics) Sound
Content Type	Text
Resource Type	Article
Subject	Acoustics and Ultrasonics Mechanics of Materials Mechanical Engineering

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