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:
Apr. 17, 1990
Filed:
Jun. 30, 1988
Applicant:
Inventor:
Tetsuya Muroi, Yokohama, JP;
Assignee:
Ricoh Company, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10L / ;
U.S. Cl.
CPC ...
381 43 ; 381 41 ;
Abstract
A reference speech pattern is described as a time series of a fixed number of states. Each of states is described with one feature vector (centroid) which represents a feature quantity of a speech portion contained in the state, and a duration time of that state. Pattern matching is carried out between the time series of feature vectors of the input speech pattern and the time series of the states which describe the reference pattern. A weighting function modifies the pattern matching distance depending on differences in duration times between the input speech and the reference pattern.