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.
Original language | English |
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Pages (from-to) | 1395-1399 |
Number of pages | 5 |
Journal | Proceedings of Forum Acusticum |
Publication status | Published - 1 Dec 2011 |
Event | 6th Forum Acusticum 2011 - Aalborg, Denmark Duration: 27 Jun 2011 → 1 Jul 2011 |
ASJC Scopus subject areas
- Acoustics and Ultrasonics