Study on Sound Insulation of Second Order Helmholtz Resonator

doi:10.13438/j.cnki.jdzk.2021.04.006

Abstract

Abstract: Based on the sound insulation characteristics of the traditional Helmholtz resonator, the equivalent impedance of the Helmholtz resonator based on second-order resonance is derived by using the transfer matrix method layering, and the sound insulation characteristics of the second-order Helmholtz resonator are studied in combination with finite element simulation. It is verified that there are two sound insulation bands in the second-order resonator, and excellent sound insulation effect can be obtained by adjusting the geometric parameters. It has some research significance in acoustic application of sound noise reduction.

Key words: Transfer matrix method, Second-order Helmholtz resonator, Double sound-insulated bands, Finite element simulation

ZHAO Zhun, KONG Peng, DENG Ke. Study on Sound Insulation of Second Order Helmholtz Resonator[J]. Journal of Jishou University(Natural Sciences Edition), 2021, 42(4): 27-30.

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