Control of interior noise inside a small enclosure using T-shaped acoustic resonators

Deyu Li, Ganghua Yu, Li Cheng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

A theoretical study of noise control in a small enclosure using T-shaped acoustic resonators is presented by means of acoustic coupling analysis. The T-shaped acoustic resonators consist of two mutually perpendicular tubes. When they are inserted into the enclosure, the re-radiation from their apertures excited by the primary source in the enclosure interacts with the existing sound in the enclosure to effectively attenuate the noise level inside the enclosure. The biggest advantage of the T-shaped acoustic resonator is that its large aspect ratio makes it possible to be integrated into the host structures, which relaxes the space requirement in implementation. A general model describing acoustic interaction between one enclosure and T-shaped acoustic resonators is developed, and analytical solutions of the pressure inside the enclosure and the volume velocity source strength scattering out of the resonator aperture are obtained when a single resonator is involved in coupling. These solutions provide insight into the fundamental physics of the acoustic interaction and lead to a helpful design tool for noise control in a small enclosure by using T-shaped acoustic resonators. Numerical simulations are also carried out to illustrate implementation procedures for noise suppression in a right parallepiped enclosure.
Original languageEnglish
Title of host publicationTurkish Acoustical Society - 36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007 ISTANBUL
Pages1643-1652
Number of pages10
Volume3
Publication statusPublished - 1 Dec 2007
Event36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007 - Istanbul, Turkey
Duration: 28 Aug 200731 Aug 2007

Conference

Conference36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007
CountryTurkey
CityIstanbul
Period28/08/0731/08/07

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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