Method of renewing reference pattern stored in dictionary
First Claim
1. A reference pattern renewing method comprising:
- (a) inputting an input pattern of an utterance of a word;
(b) comparing said input pattern with reference patterns stored in a dictionary memory to thereby generate at least a first candidate having the highest degree of similarity and a second candidate having the second highest degree of similarity;
(c) calculating a ratio of the highest degree of similarity to the second highest degree of similarity;
(d) determining whether or not said ratio is equal to or less than a predetermined threshold value;
(e) calculating, from said input pattern, a renewed reference pattern to be substituted for a corresponding one of said reference patterns when it is determined that the ratio of the highest degree of similarity to the second highest degree of similarity is neither equal to nor less than said predetermined threshold value; and
(f) registering said renewed reference pattern in said dictionary memory instead of said corresponding one of said reference patterns.
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Abstract
A reference pattern renewing method includes inputting an input pattern of an utterance of a word, comparing the input pattern with reference patterns stored in a dictionary memory to thereby generate at least a first candidate having the highest degree of similarity and a second candidate having the second highest degree of similarity, and calculating a ratio of the highest degree of similarity to the second highest degree of similarity. The method further includes determining whether or not the ratio is equal to or less than a predetermined threshold value, calculating, from the input pattern, a renewed reference pattern to be substituted for a corresponding one of the reference patterns when it is determined that the ratio of the highest degree of similarity to the second highest degree of similarity is neither equal to nor less than the predetermined threshold value, and registering the renewed reference pattern in the dictionary memory instead of the corresponding one of the reference patterns.
16 Citations
13 Claims
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1. A reference pattern renewing method comprising:
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(a) inputting an input pattern of an utterance of a word; (b) comparing said input pattern with reference patterns stored in a dictionary memory to thereby generate at least a first candidate having the highest degree of similarity and a second candidate having the second highest degree of similarity; (c) calculating a ratio of the highest degree of similarity to the second highest degree of similarity; (d) determining whether or not said ratio is equal to or less than a predetermined threshold value; (e) calculating, from said input pattern, a renewed reference pattern to be substituted for a corresponding one of said reference patterns when it is determined that the ratio of the highest degree of similarity to the second highest degree of similarity is neither equal to nor less than said predetermined threshold value; and (f) registering said renewed reference pattern in said dictionary memory instead of said corresponding one of said reference patterns. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A reference pattern renewing method comprising:
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(a) inputting an input pattern of an utterance of a word; (b) comparing said input pattern with reference patterns stored in a dictionary memory to thereby generate at least a first candidate having the highest degree of similarity and a second candidate having the second highest degree of similarity; (c) calculating a ratio of the highest degree of similarity to the second highest degree of similarity; (d) determining whether or not said ratio is equal to or less than a predetermined threshold value; (e) making a predetermined additional decision on whether or not one of said reference patterns relating to the highest degree of similarity is to be renewed when said step (d) determines that said ratio is equal to or less than said predetermined threshold ratio; (f) calculating, from said input pattern, a renewed reference pattern to be substituted for said one of said reference patterns when said step (f) determines that said one of reference patterns should be renewed; and (g) registering said renewal reference pattern in said dictionary memory instead of said one of said reference patterns. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification