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:
May. 16, 1995
Filed:
Feb. 24, 1994
Keiko Shimada, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a speech recognition system for deciding an input pattern as one of reference patterns by calculating dissimilarities of the input pattern and the reference patterns and selecting the minimum one of the dissimilarities which is then compared with a reject value to decide the input speech as a particular reference pattern which produces the minimum dissimilarity, in order to reduce interference by noise accompanying an input speech pattern in the input pattern, a noise level is detected from an input pattern before the input speech pattern is detected and the reject value is produced corresponding to the noise level. The minimum dissimilarity is normalized by the time duration when the input speech pattern continues to produce a normalized value. The normalized value is compared with the reject value.