| 摘要 |
PROBLEM TO BE SOLVED: To protect privacy of a speaker without displeasing a person by effectively preventing voice superimposed on the speaker's voice to be output from becoming high-pitched voice. SOLUTION: By storing data concerning two or more different spectral envelopes in a spectral envelope database 15, extracting a spectral fine structure 14 from voice signals of the speaker, and selecting a data concerning the spectral envelope from among the data concerning the spectral envelope stored in the spectral envelope database 15, a spectrum 17 of the anti-hearing sound output by synthesizing the selected spectral envelope and the spectral fine structure and superimposing the speaker's voice on the synthetic sound is created. COPYRIGHT: (C)2007,JPO&INPIT
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