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:
Aug. 10, 1993
Filed:
Jun. 15, 1990
Applicant:
Inventors:
Martin D Wilde, Chicago, IL (US);
William L Martens, Evanston, IL (US);
Gary S Kendall, Evanston, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04S / ;
U.S. Cl.
CPC ...
381 17 ; 381 97 ;
Abstract
An apparatus and method for generating audio output signals having a specified cross-correlation relationships is disclosed. The apparatus operates by phase-shifting different frequency bands of an input signal by differing amounts which depend on the desired cross-correlation. The amplitude spectrum of the input signal is not altered.