A general analysis of the active control of sound radiation from a baffled panel

1989 ◽  
Vol 86 (S1) ◽  
pp. S32-S32 ◽  
Author(s):  
Scott D. Snyder ◽  
Pan Jie ◽  
Colin H. Hansen
Keyword(s):  
Active Control ◽  
Sound Radiation ◽  
General Analysis

Active control of low-frequency sound radiation by cylindrical shell with piezoelectric stack force actuators

2012 ◽  
Vol 331 (11) ◽  
pp. 2471-2484 ◽  
Author(s):  
Yin Cao ◽  
Hongling Sun ◽  
Fengyan An ◽  
Xiaodong Li
Keyword(s):  
Cylindrical Shell ◽  
Active Control ◽  
Low Frequency ◽  
Sound Radiation ◽  
Frequency Sound

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

2001 ◽  
Vol 124 (1) ◽  
pp. 2-9 ◽  
Author(s):  
Kean Chen ◽  
Gary H. Koopmann
Keyword(s):  
Active Control ◽  
Near Field ◽  
Low Frequency ◽  
Sound Radiation ◽  
Sound Field ◽  
Sound Power ◽  
Frequency Range ◽  
Sound Sources ◽  
Frequency Sound ◽  
Secondary Sources

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.

Active control of sound radiation from a vibrating structure

2002 ◽  
Author(s):  
V.V. Varadan ◽  
Z. Wu ◽  
S.-Y. Hong ◽  
V.K. Varadan
Keyword(s):  
Active Control ◽  
Sound Radiation
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