Helmholtz Resonator with Extended Neck and Absorbing Material

Abstract:

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The acoustic attenuation of Helmholtz resonator including an extended neck and sound–absorbing materials is investigated in current study. A two-dimensional analytical method based on mode matching method is developed to determine the Transmission loss (TL) of a piston-driven model of Helmholtz resonator. The resonance frequency and Transmission loss predicted from this method show reasonable agreements with published experimental results. Finally, this method is used to examine the effect of length of extended neck, extended neck with/without absorbing material and acoustic properties of sound-absorbing material on acoustic performance of Helmholtz resonator.

Info:

Periodical:

Edited by:

Hun Guo, Taiyong Wang, Zeyu Weng, Weidong Jin, Shaoze Yan, Xuda Qin, Guofeng Wang, Qingjian Liu and Zijing Wang

Pages:

308-312

DOI:

10.4028/www.scientific.net/AMM.141.308

Citation:

R. Bi et al., "Helmholtz Resonator with Extended Neck and Absorbing Material", Applied Mechanics and Materials, Vol. 141, pp. 308-312, 2012

Online since:

November 2011

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$35.00

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