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https://hdl.handle.net/2440/1354
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Type: | Journal article |
Title: | Active control of radiation from a piston set in a rigid sphere |
Author: | Lin, Z. Lu, J. Shen, C. Qiu, X. Xu, B. |
Citation: | Journal of the Acoustical Society of America, 2004; 115(6):2954-2963 |
Publisher: | Acoustical Soc Amer Amer Inst Physics |
Issue Date: | 2004 |
ISSN: | 0001-4966 1520-8524 |
Statement of Responsibility: | Zhibin Lin, Jing Lu, Chunhua Shen, Xiaojun Qiu, and Boling Xu |
Abstract: | Active control of the sound radiated from a piston set in a rigid sphere with a set of control point sources around is considered in this paper, where the scattering sound field of the control sound from the rigid sphere has been taken into account to minimize the total radiated sound power. Analytic results of the sound power are obtained and numerical simulations show that it is possible to reduce the radiation from a small piston set in a rigid sphere similar to the size of a human head up to a certain frequency. It is found that the introduction of the scattering object makes significant differences from the active control without scattering objects. This being the case, the scattering object makes the active noise control easier. To increase the global reduction of sound-power output, the optimal number and locations of the control sources and the optimal number and locations of error sensors are discussed. Finally, experiments with one control source and one error sensor around a head simulator have been carried out to verify the simulation results. |
Keywords: | Head Humans Noise Acoustics Sound Pressure Models, Biological |
DOI: | 10.1121/1.1736654 |
Published version: | http://dx.doi.org/10.1121/1.1736654 |
Appears in Collections: | Aurora harvest 7 Computer Science publications |
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