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. 24, 1998
Filed:
Dec. 15, 1995
Applicant:
Inventor:
Shigeki Aoshima, Susono, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
704246 ; 704255 ; 704250 ; 704236 ;
Abstract
A sound processor (12) calculates first through third parameters according to an LPC cepstrum, a primary delta cepstrum and a secondary delta cepstrum. The first parameter catches a static characteristic, the second parameter catches a dynamic characteristic with time, and the third parameter catches a locally dynamic characteristic with time. A word dictionary (14) stores first through third parameters for a standard pattern. Hence, a DP matching unit (16) recognizes a voice based on a distance between an input voice of the three parameters and the standard pattern.