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DEVICE FOR LEARNING AMOUNT OF MOVEMENT OF BASIC FREQUENCY FOR ADAPTING TO SPEAKER, BASIC FREQUENCY GENERATION DEVICE, AMOUNT OF MOVEMENT LEARNING METHOD, BASIC FREQUENCY GENERATION METHOD, AND AMOUNT OF MOVEMENT LEARNING PROGRAM
DEVICE FOR LEARNING AMOUNT OF MOVEMENT OF BASIC FREQUENCY FOR ADAPTING TO SPEAKER, BASIC FREQUENCY GENERATION DEVICE, AMOUNT OF MOVEMENT LEARNING METHOD, BASIC FREQUENCY GENERATION METHOD, AND AMOUNT OF MOVEMENT LEARNING PROGRAM
An objective is to provide a technique for accurately reproducing features of a fundamental frequency of a target-speaker's voice on the basis of only a small amount of learning data. A learning apparatus learns shift amounts from a reference source F0 pattern to a target F0 pattern of a target-speaker's voice. The learning apparatus associates a source F0 pattern of a learning text to a target F0 pattern of the same learning text by associating their peaks and troughs. For each of points on the target F0 pattern, the learning apparatus obtains shift amounts in a time-axis direction and in a frequency-axis direction from a corresponding point on the source F0 pattern in reference to a result of the association, and learns a decision tree using, as an input feature vector, linguistic information obtained by parsing the learning text, and using, as an output feature vector, the calculated shift amounts.
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