PROBLEM TO BE SOLVED: To create voice piece database by which high quality synthesized voice is generated for text expression having linguistically and acoustically important wording.;SOLUTION: In the voice piece database creating method, voice piece database 11 is created to record voice pieces when voice corresponding to a sentence, that is made by connecting voice pieces and inputted, is to be synthesized. Then, degree of acoustic importance of each text is obtained by a morpheme analysis process of each text from the texts in text database 1, a rhythm analysis process in which rhythm features are estimated such as a phoneme group, a pitch pattern, a tempo and a pause or the like by rhythm estimation and by the phoneme group and the rhythm features. Moreover, the method is provided with an acoustic important sentence extracting process which extracts an acoustically important sentence that does not match with a linguistically important sentence and has acoustically high degree of importance, a voice recording process in which voice recording is conducted corresponding to a linguistically important sentence and an acoustically important sentence and a database recording process in which a phoneme label is put on the voice data recorded in the voice recording process and the labeled voice data are recorded in a voice piece database.;COPYRIGHT: (C)2004,JPO
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