Patent ID: 8036403
Filing Date: 2011-10-11
Classification: H04R

Abstract:
1. A directional sound wave radiator comprising: a sound transmission duct, a reverser, an annular director, a parabolic reflector, and a straight tubular loudspeaker cylinder, wherein said sound transmission duct is mounted substantially coaxially with said parabolic reflector, wherein said straight tubular loudspeaker cylinder is connected to said parabolic reflector, wherein said reverser is provided inside said straight tubular loudspeaker cylinder and at the outlet end of said sound transmission duct, the outlet end of said reverser has an annular section, which is substantially perpendicular to the axis of said parabolic reflector, and said annular section is positioned substantially at the focus of said parabolic reflector, and wherein said annular director is mounted around said sound transmission duct and at the outlet end of said reverser to define an annular shape of the outlet end of said reverser.