An acoustic metamaterial lens for acoustic point-to-point communication in air

Fei Sun; Shuwei Guo; Borui Li; Yichao Liu; Sailing He

doi:10.1134/s1063771019010111

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arXiv · 1711.05126

An acoustic metamaterial lens for acoustic point-to-point communication in air

Fei Sun·Shuwei Guo·Borui Li·Yichao Liu·Sailing He

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Abstract

Acoustic metamaterials have become a novel and effective way to control sound waves and design acoustic devices. In this study, we design a 3D acoustic metamaterial lens (AML) to achieve point-to-point acoustic communication in air: any acoustic source (i.e. a speaker) in air enclosed by such an AML can produce an acoustic image where the acoustic wave is focused (i.e. the field intensity is at a maximum, and the listener can receive the information), while the acoustic field at other spatial positions is low enough that listeners can hear almost nothing. Unlike a conventional elliptical reflective mirror, the acoustic source can be moved around inside our proposed AML. Numerical simulations are given to verify the performance of the proposed AML.

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Fei Sun, Shuwei Guo, Borui Li, Yichao Liu, Sailing He. 2017-11-10. An acoustic metamaterial lens for acoustic point-to-point communication in air. https://doi.org/10.1134/s1063771019010111

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