| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to set a pitch marl with little pitch fluctuation by a relatively simple processing and to achieve a high quality speech synthesis method by preparing speech waveform segments beforehand and winder/overlap- adding them with one pitch period shifted centering a minimum point in the speech waveform segments. SOLUTION: When a sentence containing kanji and hiragana letters is inputted to a text analysis part 101, the part executes morphemic analysis referring to a word dictionary 102, reading the sentence containing kanji and hiragana, determining accents and intonations, and outputting phonetic signs (intermediate language) with metrical sings. A parameter generation part 103 sets a pitch frequency pattern, a duration of phoneme, etc. A speech synthesis part 104 executes speech synthesis processing. Namely, it selects segments in a segment dictionary 105, windowing to hang the time-window of time-window length centering the pitch mark by a windowing part 106, and synthesizing speeches by PSOLA method (a synthesis method of superimposing speeches with pitch mark positions shifted in accordance with synthesis pitch period). |
