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:
Oct. 13, 2009
Filed:
Oct. 31, 2005
Richard A. Kreifeldt, Sandy, UT (US);
Curtis R. Reed, Salt Lake City, UT (US);
Aaron M. Hammond, Eagle Mountain, UT (US);
Richard A. Kreifeldt, Sandy, UT (US);
Curtis R. Reed, Salt Lake City, UT (US);
Aaron M. Hammond, Eagle Mountain, UT (US);
Harman International Industries, Incorporated, Northridge, CA (US);
Abstract
A signal processing system improves signal quality by accurately locating and eliminating a feedback signal in an input signal, such as an audio signal. The signal processing system interpolates between frequency sample points to obtain a more accurate identification of a feedback signal frequency. A less intrusive filter reduces or eliminates the identified frequency signal frequency without excessive adverse effects on adjacent frequencies in the input signal.