| 摘要 |
PROBLEM TO BE SOLVED: To provide a speech synthesizing device improving a quality deterioration of a vowel unvoiced syllable at a low vocalization speed, and generating a synthesized voice with a high audible sense quality. SOLUTION: A parameter generation part 300 is provided with an intermediate language analysis part 301, a pitch pattern generating part 302, a primary vowel unvoicing determination part 303 determines a unvoicing of a vowel based only on input texts such as type face and accent, a secondary vowel unvoicing determination part 304 conducting a final unvoicing determination from a result of the primary vowel unvoicing determination and a vocalization speed level designated by a user, a phoneme power determining part 305, a phoneme duration calculation part 306, and a duration correction part 307 correcting a phoneme duration according to the vocalization speed designated by the user in a speech synthesis device. This device is constituted such that a vowel unvoicing processing is conducted according to conventional rules for normal and fast vocalization speeds, and the vowel unvoicing processing is not conducted for a slow vocalization speed. |
