SPEECH SYNTHESIZER, SPEECH SYNTHESIS METHOD, AND SPEECH SYNTHESIS PROGRAM

摘要

State duration creation means creates a state duration indicating a duration of each state in a hidden Markov model, based on linguistic information and a model parameter of prosody information. Duration correction degree computing means derives a speech feature from the linguistic information, and computes a duration correction degree which is an index indicating a degree of correcting the state duration, based on the derived speech feature. State duration correction means corrects the state duration based on a phonological duration correction parameter and the duration correction degree, the phonological duration correction parameter indicating a correction ratio of correcting a phonological duration.