Speech synthesis apparatus, speech synthesis method and speech synthesis program based on one model speech recognition synthesis

摘要

Disclosed are a voice synthesis apparatus, voice synthesis method and voice synthesis program capable of implementing voice synthesis of a specified individual with high quality using few items of learned voice data. The voice synthesis apparatus learns a transition model (225) of articulatory movement stored for each of fixed voice units such as phonemes, from an unspecified large number of speakers. The voice synthesis apparatus is provided with means (230) for converting to voice synthesis parameters that carry vocal tract shape information whereby a series of articulatory features is adapted to individuals and an optimum voice unit series is obtained at the same time by comparing this model with the input voice. In addition, the voice synthesis apparatus obtains high-quality synthesised voice for a specified individual by registering sound source code in a state transition model of articulatory movement using closed loop learning employing a drive sound source codebook.