Patent ID: 7278513
Filing Date: 2007-10-09
Classification: G10K,H04R

Abstract:
1. A loudspeaker, comprising: a driver unit capable of producing sound waves; a waveguide for receiving sound waves produced by the driver unit, the waveguide having: a lens system having a plurality of plates, where the plurality of plates are positioned substantially at an end opposite the throat such that a portion of the flare provides a space for spherical sound radiation to divide an interior of the waveguide into a plurality of acoustic paths each path defined by a first path within the space for spherical sound radiation and a second path between plates, the plurality of acoustic paths allowing the sound waves produced by the driver to reach the exit plane and where at least two of the plurality of plates are of different length so that the plurality of acoustic paths are substantially the same length where the lens system flattens the spherical sound radiation originating from the throat to cylindrical sound radiation at the exit plane.