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TECHNICAL PAPERS

Reduction of Noise Inside a Cavity by Piezoelectric Actuators

[+] Author and Article Information
I. Hagiwara, D. W. Wang, Q. Z. Shi, R. S. Rao

Dept. of Mechanical Engineering and Science, Tokyo Institute of Technology, 2-12-1 Oookayama, Meguro, Tokyo, Japan 152-8552

J. Vib. Acoust 125(1), 12-17 (Jan 06, 2003) (6 pages) doi:10.1115/1.1526513 History: Received November 01, 2000; Revised September 01, 2002; Online January 06, 2003
Copyright © 2003 by ASME
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References

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Figures

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Acoustic cavity model with two elastic panels
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Analytical predictions of the SPL for uncontrolled and controlled cases with one actuator
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Analytical predictions of the SPL for uncontrolled and controlled cases with different numbers of actuators
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Sound field predictions at the error sensor location for the tonal excitation at 256 Hz for one actuator and one sensor: (a) uncontrolled case, (b) global control, and (c) local control
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Sound field predictions at the location of error sensor 1 for the tonal excitation at 256 Hz for one actuator: (a) local control with two sensors (b) local control with three sensors
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Comparison between the nonoptimized and optimized sound pressure level

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