SPEECH SYNTHESIS DEVICE AND SPEECH SYNTHESIS METHOD

摘要

This speech synthesis device is provided with: an oral aperture generating unit (102), which generates an oral aperture corresponding to a volume within an oral cavity such that the oral aperture for a phoneme positioned at the beginning of a sentence in text is larger than an oral aperture for a phoneme positioned at the end of the sentence for each phoneme generated from the text, using information that shows the type of phoneme generated from text that has been input and the position of that phoneme in the text; a fragment selecting unit (105), which selects fragment information corresponding to the phoneme from within a plurality of fragment information stored in a fragment storage unit on the basis of the type and oral aperture for that phoneme for each phoneme generated from the text, from the fragment storage unit that each stores the plurality of fragment information containing type of phoneme, information on oral aperture, and the speech fragment data; and a synthesis unit (106) that generates synthetic tones for the text using the fragment information selected by the fragment selecting unit (105) and rhythm information generated from the text.