On Helmholtz resonators with tapered necks

Shiu Keung Tang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

113 Citations (Scopus)


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 languageEnglish
Pages (from-to)1085-1096
Number of pages12
JournalJournal of Sound and Vibration
Issue number3-5
Publication statusPublished - 21 Jan 2005

ASJC Scopus subject areas

  • General Engineering
  • Mechanical Engineering


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