On Helmholtz resonators with tapered necks

Shiu Keung Tang

doi:10.1016/j.jsv.2003.11.032

On Helmholtz resonators with tapered necks

Shiu Keung Tang

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

119 Citations (Scopus)

Abstract

The acoustical properties of Heimholte resonators with necks having cross-section dimensions decreasing away from the entry of the resonator cavities are investigated experimentally and theoretically in the present study. Results show that significant improvement of the sound absorption capacity of the resonators can be obtained by introducing such neck tapering. Such improvement is enhanced when the tapered length is increased. The present derived theory predicts the resonance frequency of the tapered neck resonator within engineering tolerance and the accuracy is again improved as the tapered length increases.

Original language	English
Pages (from-to)	1085-1096
Number of pages	12
Journal	Journal of Sound and Vibration
Volume	279
Issue number	3-5
DOIs	https://doi.org/10.1016/j.jsv.2003.11.032
Publication status	Published - 21 Jan 2005

ASJC Scopus subject areas

General Engineering
Mechanical Engineering

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10.1016/j.jsv.2003.11.032

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AB - The acoustical properties of Heimholte resonators with necks having cross-section dimensions decreasing away from the entry of the resonator cavities are investigated experimentally and theoretically in the present study. Results show that significant improvement of the sound absorption capacity of the resonators can be obtained by introducing such neck tapering. Such improvement is enhanced when the tapered length is increased. The present derived theory predicts the resonance frequency of the tapered neck resonator within engineering tolerance and the accuracy is again improved as the tapered length increases.

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On Helmholtz resonators with tapered necks

Abstract

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