CLUSTERED PATTERNS FOR TEXT-TO-SPEECH SYNTHESIS

摘要

A speech information processing apparatus previously stores a plurality of representative patterns corresponding to each cluster to which prosody unit belongs. A clustering section classifies a plurality of prosody units in speech data to each cluster according to attribute data of the prosody unit. An extraction section extracts pitch pattern corresponding to the prosody unit classified to each cluster from the speech data. A transformation parameter generation section generates a transformation parameter by evaluating error between the pitch pattern and transformed representative pattern by unit of the cluster. A representative pattern generation section updately generates the representative pattern by calculating an evaluation function of the pitch pattern and the transformation parameter by unit of the cluster.