Authors tested the 3D-printed meta-earplug on an artificial head and a group of human participants (IMAGE)

American Institute of Physics

Authors tested the 3D-printed meta-earplug on an artificial head and a group of human participants

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The authors tested the 3D-printed meta-earplug on an artificial head and a group of human participants, demonstrating an effective reduction in low-frequency sound.

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Carillo et al.

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