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专利名称：Speech synthesis method and system发明人：Sakamoto, Masaharu,Kobayashi, Mei,Saito,
Takashi,Nishimura, Masafumi
申请号：EP95113452.7申请日：19950828公开号：EP0703565A2公开日：19960327
专利附图：
摘要：Disclosed is a speech synthesis system which makes use of a pitch-synchronouswaveform overlap method to realize stable speech synthesis processing in which pitchshaking is negligible. The present invention is characterized in that glottal closure
instants are used as reference points (pitch marks) for overlapping. Since the glottalclosure instants can be extracted stably and accurately by using dyadic Wavelet
conversion, speech in which pitch shaking is negligible and rumbling sounds are minimizedcan be synthesized stably. In addition, more flexible waveform separation becomespossible by setting the reference point for overlapping and the reference point forwaveform separation to different positions. The extraction of glottal closure instants isperformed by searching the local peaks of the dyadic Wavelet conversion, but preferablya threshold value for searching for the local peaks of the dyadic Wavelet conversion isadaptively controlled each time dyadic Wavelet conversion is obtained.
申请人：International Business Machines Corporation
地址：Old Orchard Road Armonk, N.Y. 10504 US
国籍：US
代理机构：Williams, Julian David
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