The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2013
Filed:
May. 03, 2012
Brian Sterling, Farmington Hills, MI (US);
John Sheerin, Pittsburgh, PA (US);
Douglas Hogue, Farmington Hills, MI (US);
Peter Premo, Charlton, MA (US);
Brian Sterling, Farmington Hills, MI (US);
John Sheerin, Pittsburgh, PA (US);
Douglas Hogue, Farmington Hills, MI (US);
Peter Premo, Charlton, MA (US);
Harman International Industries, Incorporated, Northridge, CA (US);
Abstract
A phase plugs or acoustic lens improves the directional audio performance of a loudspeaker. Application of the improved directional audio performance to a sound system in a listening area may improve the performance of the audio system. Configuration of the acoustic lens or phase plug may include both symmetrical and asymmetrical features to provide an improved frequency response and directivity. The improved loudspeaker may provide improved an improved listing location, for example, in a vehicle.