Simulation of secondary sound field produced by annular parametric array based on Gaussian beam expansion

Bo Wang; Lei Zhang; Kun Wang; Zhihua Zhao; Zhimiao Lu

doi:10.1117/12.2673917

6 April 2023 Simulation of secondary sound field produced by annular parametric array based on Gaussian beam expansion

Bo Wang, Lei Zhang, Kun Wang, Zhihua Zhao, Zhimiao Lu

Proceedings Volume 12615, International Conference on Signal Processing and Communication Technology (SPCT 2022); 126152K (2023) https://doi.org/10.1117/12.2673917
Event: International Conference on Signal Processing and Communication Technology (SPCT 2022), 2022, Harbin, China

Abstract

Considering the fluid nonlinearity, a calculation model based on quasi-linear solution of Westervelt’s equation is proposed in this paper. A more accurate approximation of Rayleigh integral is derived and velocity distribution in parametric loudspeaker surface is fitting by a set of Gaussian functions. Gaussian beam expansion is used to simply five-fold integral in calculation difference-frequency wavefield. Spatial sound pressure distribution of an annular array composed of serval rigid disks are presented. It can be found that uniform distribution of difference-frequency wave in xoy-plane is realized by annular array.

Citation Download Citation

Bo Wang, Lei Zhang, Kun Wang, Zhihua Zhao, and Zhimiao Lu "Simulation of secondary sound field produced by annular parametric array based on Gaussian beam expansion", Proc. SPIE 12615, International Conference on Signal Processing and Communication Technology (SPCT 2022), 126152K (6 April 2023); https://doi.org/10.1117/12.2673917

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