Reconstruction of the 3D Fourier spectrum for an acoustic beam in anisotropic media by 2D spectrum of the external perturbation

Relation between a two-dimensional spectrum of an external action on a crystal surface and a three-dimensional Fourier image of an acoustical perturbation appearing in a media demonstrated. Shown that well known for isotropic optics media relations can be applied in the case of general wave process in an anisotropic media.