Diffraction of creeping waves from a line of a saltus of a curvature (Acoustic three-dimensional medium)

The problem of a diffraction of a creeping waves from a line of a rupture of a curvature is investigated, and the “oblique” falling in a three-dimensional acoustic medium is taken into account essentially. Two cases of a rupture of a curvature on a line of interface of surfaces are considered: a curvature of one sign, but different on magnitude, and case of a positive curvature conjugate on a line of a rupture with zero.