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. 05, 2005
Filed:
Oct. 25, 2000
Applicant:
Michael L. Petroff, West Hills, CA (US);
Inventor:
Michael L. Petroff, West Hills, CA (US);
Assignee:
Harman International Industries, Incorporated, Northridge, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G003/00 ; H04B001/00 ;
U.S. Cl.
CPC ...
Abstract
A digital signal processing technique is provided for symmetrical stereophonic image enhancement in an automotive listening environment. The process introduces a rapid rate-of-change of phase shift between the channels, to a maximum of substantially 180 degrees, at substantially 200 Hertz. As an additional feature, spatial enhancement of the reproduced sound may be provided through the application of modified stereo difference signals prior to the image enhancement process.