Study on broadband low-frequency sound insulation of multi-channel resonator acoustic metamaterials

Study on broadband low-frequency sound insulation of multi-channel resonator acoustic metamaterials

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A novel acoustic metamaterial structure, made up of both resonator and multiple channels, is proposed to insulate low-frequency broadband noises.Three bandgaps with a total width of 658 Hz can be obtained below 900 Hz when the structure appears as a single negative characteristic within specific frequency ranges.These bandgaps ucsb gaucho blue are caused by the standing-wave characteristics under the coupling action of the interior and exterior cavities and the multiple channels.

By changing structural parameters and materials, the low-frequency broadband sound insulation performance My Mom Dad Is Well Trained Funny Cartoon Dog Gift For Dog Lover Personalized Shirt of the structure can be improved.Experimental results further prove the sound insulation characteristics.The results obtained herein can be used as a guide toward achieving low-frequency broadband sound insulation using a lightweight structure.