Introducing Silencers on Micro Turboshafts Powering Unmanned Aerial Vehicles by Andrei-George Totu, Cristian Olariu, Marius Deaconu, Laurențiu Cristea, Luminița Drăgășanu, Constantin Sandu

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Embedded Rough-Neck Helmholtz Resonator Low-Frequency Acoustic Attenuator by Xianming Sun, Tao Yu, Lipeng Wang, Yunshu Lu, Changzheng Chen

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A Tunable Open Planar Acoustic Notch Filter Utilizing a Pneumatically Modulated Helmholtz Resonator Array by Fumiya Mizukoshi, Hidetoshi Takahashi

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Harnessing ambient sound: Different approaches to acoustic energy harvesting using triboelectric nanogenerators by Fandi Jean, Muhammad Umair Khan, Anas Alazzam, Baker Mohammad

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Acoustic waves in gas-filled structured porous media: Asymptotic tortuosity/compliability and characteristic-lengths reevaluated to incorporate the influence of spatial dispersion by Lafarge D.

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On the directionality of membrane coupled Helmholtz resonators under open air conditions by R. Domingo-Roca, A. Feeney, J. F. C. Windmill, J. C. Jackson-Camargo

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Nonlinear diffraction of water waves by offshore stuctures by Matiur Rahman, Lokenath Debnath

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