Device for loading a pattern recognizer with a reference pattern selected from similar patterns

• US 4,731,845 A
• Filed: 07/19/1984
• Issued: 03/15/1988
• Est. Priority Date: 07/21/1983
• Status: Expired due to Term

• Current Assignee: NEC Electronics Corporation (Renesas Electronics Corporation)
• Original Assignee: NEC Corporation
• Inventors: Matsuki, Tomoko, Tanaka, Hideo
• Primary Examiner(s): KEMENY, EMANUEL
• Application Number:
  US06/632,492
• Time in Patent Office: 1,335 Days
• Field of Search: 381/40-50, 364/513.5, 382/1, 382/10, 382/30, 382/34, 382/36, 382/33
• US Class Current: 704/239
• CPC Class Codes: G07C 9/35 by means of a handwritten signature
• CPC Class Codes: G10L 15/063 Training
• CPC Class Codes: G10L 25/87 Detection of discrete points within a voice signal

Abstract

One reference pattern is selected from three spoken repetitions of the same utterance, the one selected having the highest calculated similarity to the other two, thereby being the most representative.

Claims

1. A pattern storing device for storing a reference pattern in a pattern memory of a pattern recognizing system, said pattern storing device comprising:

pattern memory means for storing those at least three patterns as stored patterns from which said reference pattern should be selected, all of said at least three patterns representing the same speech sequence;

similarity measure calculating means for calculating similarity measures for each of said stored patterns relative to others thereof, respectively;

sum calculating means for calculating a sum of the similarity measures calculated for each of said stored patterns; and

selecting means responsive to the sums calculated for said stored patterns, respectively, for selecting that one of said stored patterns as said reference pattern for which the sum is an extremum of the sums calculated for said stored patterns, said reference pattern selected by said selecting means being the most representative pattern of said at least three patterns stored in said pattern memory means.

2. A pattern storing device as claimed in claim 1, wherein said sum calculating means comprises means for storing the similarity measures calculated for said stored patterns, respectively, and means for calculating said sums by summing up the similarity measures stored for said stored patterns, respectively.

3. A pattern storing device as claimed in claim 1, wherein said selecting means comprises means for storing those sums as stored sums which are calculated for said stored patterns, respectively, and means for comparing said stored sums with one another to find said one of the stored patterns for which the sum is said extremum.