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:
Mar. 19, 1991
Filed:
Feb. 08, 1989
Applicant:
Inventor:
Hiroaki Hattori, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10L / ; G10L / ;
U.S. Cl.
CPC ...
381 46 ;
Abstract
A device for use in a speech recognizer or similar apparatus for normalizing the spectrum of speech as preprocessing for speech recognition. The device divides the spectrum of input speech at a predetermined frequency and determines a linear approximate line for each of the divided spectra such that the resulting approximate lines join each other at the point of division, thereby normalizing the spectrum.