Embedded Rough-Neck Helmholtz Resonator Low-Frequency Acoustic Attenuator
CrystalsIn various practical noise control scenarios, such as duct noise mitigation, industrial machinery, architectural acoustics, and underwater applications, it is essential to develop noise absorbers that deliver effective low-frequency attenuation while ...
Xianming Sun +4 more
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The Improvement on Noise Attenuation Performance of a Duct-resonator System
Journal of Asian Architecture and Building Engineering, 2017 The Helmholtz resonator (hereafter resonator) is qualified as a silencer with a narrow noise attenuation band at its designed resonance frequency. Combining several resonators in line is a possible way to produce a broader noise attenuation band.
Dizi Wu, Nan Zhang
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Noise attenuation capacity of a Helmholtz resonator
Advances in Engineering Software, 2018 The noise attenuation capacity of a HR defined as the integral of transmission loss in the frequency domain is first derived.The theoretical formula of noise attenuation capacity shows that it is only determined by the geometries of the neck and the cross-sectional area of the duct.The theoretical formula is validated by FEM simulation using COMSOL ...
Chenzhi Cai, Cheuk Ming Mak
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Asymptotics of the meta-atom: plane wave scattering by a single Helmholtz resonator. [PDF]
Philos Trans A Math Phys Eng Sci, 2022 Smith MJA +4 more
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Effects of Aperture Shape on Absorption Property of Acoustic Metamaterial of Parallel-Connection Helmholtz Resonator. [PDF]
Materials (Basel), 2023 Bi S +8 more
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Tailored acoustic metamaterials. Part II. Extremely thick-walled Helmholtz resonator arrays. [PDF]
Proc Math Phys Eng Sci, 2022 Smith MJA, Abrahams ID.
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Tailored acoustic metamaterials. Part I. Thin- and thick-walled Helmholtz resonator arrays. [PDF]
Proc Math Phys Eng Sci, 2022 Smith MJA, Abrahams ID.
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Acoustic notch filtering earmuff utilizing Helmholtz resonator arrays. [PDF]
PLoS One, 2021 Mizukoshi F, Takahashi H.
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A High-Performance Coniform Helmholtz Resonator-Based Triboelectric Nanogenerator for Acoustic Energy Harvesting. [PDF]
Nanomaterials (Basel), 2021 Yuan H +10 more
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Neck shape optimization of resonator-type sound absorbers using adjoint lattice Boltzmann method
AIP AdvancesResonant sound-absorbing devices, such as Helmholtz resonators, can effectively reduce discrete frequency noise radiated from various engineering equipment.
Kimiya Takeuchi, Kazuya Kusano
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