| 摘要 |
PROBLEM TO BE SOLVED: To respectively extract features of original voices of a plurality of speakers with satisfactory accuracy by separating mixed voices of the plurality of speakers into single voices of respective speaker while analyzing periodic features of input voices and also respectively extracting original feature parameters with respect to voices of the respective speakers. SOLUTION: A plural speaker voice separating part 11 analyzes periodic features of input voices to separate voices of respective speakers and outputs them as original voices A1 -An . In respective long-duration predictor 121 -12n , pitches L1 -Ln of the original voices are extracted from mutual correlations among these original voices A1 -An and original voices of a preceding frame or the like and signals decoded by the predictors and code vectors from original sound code books 131 -13n are added and original voices with respect to the respective speakers are decoded. Moreover, these original voices for these plural speakers are added and these voices are added with features of voice paths to become local decoded signals. Then, indexes I1 -In of the original sound code books 131 -13n are successively determined in an error analyzing part 19. |
