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Title: Enhanced noise isolation through double-panel partitions using integrated acoustic resonator array
Authors: Li, D
Cheng, L 
Issue Date: 2011
Source: Proceedings of Forum Acusticum, 2011, p. 1395-1399 (CD-ROM) How to cite?
Abstract: Mitigating sound transmission through double-panel partitions at low frequencies is investigated, by using an optimally designed long T-shaped acoustic resonator array embedded along the boundaries. Design procedure of such a system is systematically presented. First, the control mechanism using acoustic resonator in different frequency bandwidths is studied. It is found that in a relatively broadband control, the absorption by the resonator damping governs the control performance; on the contrary, in a narrow band control, the interaction between the air gap and resonators plays a dominant role. Second, the effectiveness of the resonator in the sound transmission reduction through the double-panel partition is evaluated at different frequencies of interest. It is found that most resonance peaks can be well controlled by properly tuning and locating acoustic resonators, with a few exceptions. Third, an optimal design tool for determining the locations of resonators is developed. Finally, a series of tests are carried out to validate the analytical and numerical findings under laboratory conditions.
Description: 6th Forum Acusticum 2011, Aalborg, 27 June-1 July 2011
ISSN: 2221-3767
Appears in Collections:Conference Paper

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