Mechanisms of active control of sound radiation from an opening with boundary installed secondary sources

Shuping Wang; Jiancheng Tao; Xiaojun Qiu; Jie Pan

doi:10.1121/1.5040139

Mechanisms of active control of sound radiation from an opening with boundary installed secondary sources

Shuping Wang, Jiancheng Tao, Xiaojun Qiu, Jie Pan

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

Previous work has demonstrated that installing secondary sources at the edge of a cavity opening can reduce sound radiation through it, but the mechanisms are not clear, which is investigated in this paper by using the modal decomposition method. It is found that a double layer edge system achieves better performance than a single layer system because secondary sources at the edge of the same layer cannot excite some modes effectively and those at different heights compensate this. There exists an upper limit frequency for the systems with boundary installed secondary sources, which is mainly decided by the length of the short side of the opening. More secondary source layers at the edge will increase the upper limit frequency.

Original language	English
Pages (from-to)	3345-3351
Number of pages	7
Journal	Journal of the Acoustical Society of America
Volume	143
Issue number	6
DOIs	https://doi.org/10.1121/1.5040139
Publication status	Published - 1 Jun 2018

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1 Finished

Integrated Passive and Active Control of Humming Noise from KCGM's Haul Trucks

Pan, J., Qiu, X., Hansen, C., Hlatky, D. & Fuller, C.

Australian Research Council

1/01/14 → 31/12/16

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Cite this

Wang, S., Tao, J., Qiu, X., & Pan, J. (2018). Mechanisms of active control of sound radiation from an opening with boundary installed secondary sources. Journal of the Acoustical Society of America, 143(6), 3345-3351. https://doi.org/10.1121/1.5040139

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