Acoustic filter based on Helmholtz resonator array

Jyun Hong Lu, Chung Chun Kuo, Fu-Li Hsiao, Chii Chang Chen

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Abstract

We investigate theoretically and experimentally the absorption of a Helmholtz resonator (HR) array, an aluminum device operated in water. The HR array's period is 2 mm. The operating frequency range is ∼0.2-0.7 MHz. We observed two transmission dips in both experimental and theoretical spectra. These dips are dominated by different resonance orders in the HR. The resonance behaviors are investigated with steady-fields simulation and can be represented by spring-mass models. This allows us to reduce the device's footprint significantly.

Original languageEnglish
Article number051907
JournalApplied Physics Letters
Volume101
Issue number5
DOIs
Publication statusPublished - 2012 Jul 30

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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