SPEECH SYNTHESIZING SYSTEM AND SPEECH SYNTHESIZING METHOD

摘要

Prosodic information extracted from an actual speech is stored in correlation with a phoneme string and an accent position in a prosodic information database (130). A prosodic information retrieving section (140) retrieves prosodic information having a minimum approximation cost from the prosodic information database (130) on the basis of the phoneme string being the output of a language processing section (120) according to an input text. A prosodic information transform section (150) transforms the retrieved prosodic information according to the approximation cost and to the transform rules stored in a prosodic information transform rule storage section (160). According to the transform, an electro-acoustic transducer (180) produces a synthesized speech. Thus, even if there are no speech contents corresponding to the input text in the prosodic information database (130), it is possible to produce a synthesized speech having a natural tone similar to that of when there are the speech contents.