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:
Nov. 01, 2011
Filed:
Feb. 26, 2008
Applicants:
Frank Joublin, Mainhausen, DE;
Martin Heckmann, Frankfurt am Main, DE;
Inventors:
Frank Joublin, Mainhausen, DE;
Martin Heckmann, Frankfurt am Main, DE;
Assignee:
Honda Research Institute Europe GmbH, Offenbach/Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 11/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The fundamental frequency of a harmonic signal is estimated by forming a fundamental frequency hypothesis (f0'). A comb filter is provided based on the fundamental frequency hypothesis. The harmonic signal is filtered using the comb filter. The fundamental frequency hypothesis is tested for each tooth in the comb filter. A signal indicating an estimated fundamental frequency of the provided harmonic signal may be outputted based on the testing.