대한음성학회지:말소리 (MALSORI)
- 제62호
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- Pages.69-84
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- 2007
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- 1226-1173(pISSN)
일본어 합성기에서 악센트 정보가 결합된 발음기호를 이용한 Break 예측 방법
Break Predicting Methods Using Phonetic Symbols Combined with Accents Information in a Japanese Speech Synthesizer
- 발행 : 2007.06.30
초록
Japanese is a language having intonations, which are indicated by the relative differences in pitch heights and the accentual phrases (APs) are placed according to the changes of the accents while a break occurs on a boundary of the APs. Although a break can be predicted by using J-ToBI, which is a rule-based or statistical approach, it is very difficult to predict a break exactly due to the flexibility. Therefore, in this paper, a method which can enhance the quality of synthesized speech by reducing the errors in predicting break indices (BI), are proposed. The method is to use a new definition for the phonetic symbols, which combine the phonetic values of Japanese words with the accents information. Since a stream of defined phonetic symbols includes the information on the changes in intonations, the BI can be easily predicted by dividing the intonation phrase (IP) into several APs. As a result of an experiment, the accuracy of break generations was 98 % and the proposed method contributed itself to enhance the naturalness of synthesized speeches.