NUMERAL STRING SPEECH RECOGNITION METHOD AND APPARATUS FOR EXECUTING THE METHOD

摘要

PROBLEM TO BE SOLVED: To improve the recognition rate of a numeral string speech recognition device by registering the speech patterns of numeral strings having a use history as standard patterns and executing the pattern collation or likelihood calculation between the partial patterns formed by segmenting part thereof and the inputted numeral string speech patterns. SOLUTION: This apparatus has a use information recording section 13 recording the numeral strings having the use history and these numeral strings are stored as the standard patterns in a standard patterns memory section 7. The collation with the inputted patterns or the calculation of the likelihood is executed by restricting the partial patterns within the time of about one second from the tail of the numeral strings of the standard patterns. Namely, the pattern collation between the partial patterns formed by segmenting part of the tail of the standard patterns of the registered numeral strings and the inputted numeral string speech patterns or the likelihood calculation is executed and the partial patterns having the smallest distance value or the largest likelihood are selected and the patterns are selected from the standard patterns in which the standard patterns constituting part of the selected partial patterns are registered.