| 摘要 |
PROBLEM TO BE SOLVED: To improve the reliability by giving a high score to a correctly uttered voice and giving a low score to an erroneously uttered voice. SOLUTION: A correct solution absolute logarithmic likelihood distribution PGP1 (X), which is defined as the distribution of the likelihood value between phoneme segments and the probability model of correct solution phonemes, and an incorrect solution absolute logarithmic likelihood distribution PGP1 P2 (X) are beforehand obtained by employing learning voices and the distributions are partitioned into segments against evaluation voices and correct solution phoneme groups are assigned (S1). Then, a likelihood SGP1 =x, which is the model of a correct solution phoneme P1 of each segment, is obtained (S2). Then, beforehand-obtained PGP1 (x) and each PGP1 P2 (x) are obtained by substituting (x) and the sum value of each difference is defined as an accumulated absolute score SCP1 (X)(S3). |
