Application of time — Space complex envelope technique in time-domain near-field acoustic holography

Abstract

In order to reconstruct the transient sound field with time — space complex envelope, three Green's functions are proposed: time — domain Green's function, space-domain Green's function and wavenumber domain Green's function. The numerical simulation results show that the time-domain Green's function is sensitive to the reconstruction distance and the number of measurement points. The space-domain Green's function is sensitive to the reconstruction distance. The wavenumber domain Green's function is not sensitive to the reconstruction distance and the number of measurement points. The results of the study are helpful for the identification and localization of the acoustic field.