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:
Apr. 10, 1996
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
In a word speech recognition method which performs pattern matching between unknown speech pattern and multiple reference templates and detects that one of the reference templates which provides the smallest one of distance measures detected between the unknown speech pattern and the reference templates, when the difference d between the speech period length of the unknown speech pattern and the speech period length of a selected reference template exceeds a fixed threshold value .epsilon..sub.1, partial patterns are extracted from the unknown speech pattern, each starting at a different position, and the minimum one of the distances obtained by pattern matching between these extracted partial patterns and the selected reference template is determined to be the distance between the selected reference template and the unknown speech pattern. When the difference d is in the range of -.epsilon..sub.2 .ltoreq.d.ltoreq..epsilon..sub.1, pattern matching is performed between speech periods of the unknown speech pattern and the reference templates with their variation periods eliminated therefrom at their both ends.
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