Enhanced noise isolation through double-panel partitions using integrated acoustic resonator array

Deyu Li, Li Cheng

Research output: Journal article publicationConference articleAcademic researchpeer-review

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 languageEnglish
Pages (from-to)1395-1399
Number of pages5
JournalProceedings of Forum Acusticum
Publication statusPublished - 1 Dec 2011
Event6th Forum Acusticum 2011 - Aalborg, Denmark
Duration: 27 Jun 20111 Jul 2011

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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