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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 |
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Pages (from-to) | 3345-3351 |
Number of pages | 7 |
Journal | Journal of the Acoustical Society of America |
Volume | 143 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1 Jun 2018 |
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Dive into the research topics of 'Mechanisms of active control of sound radiation from an opening with boundary installed secondary sources'. Together they form a unique fingerprint.Projects
- 1 Finished
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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, Kalgoorlie Consolidated Gold Mines Pty Ltd, Royal Melbourne Institute of Technology University, University of Adelaide, Virginia Polytechnic Institute and State University
1/01/14 → 6/05/20
Project: Research