2018•Vibroengineering PROCEDIAOpen access

Super-directivity formation and numerical analysis of acoustic array

Yanchao Li, Zhihong Liu, Guangqing Lu, Chuijie Yi, Zunmin Liu

Abstract

The formation of super-directivity of an acoustic array is firstly analyzed to construct a general mathematical model of the array with super-directivity and maximum signal-to-noise ratio (SNR). Then the numerical simulation on the super-directivity of the array is carried out for the arrays with different shapes, element number and apertures. It shows that, circular array with regular shape and Archimedean spiral array with irregular shape have optimum directivity.

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Key concepts: Directivity, Acoustics, Spiral (railway), Noise (video), Physics, Computer science, Mathematics, Telecommunications