| 摘要 |
PROBLEM TO BE SOLVED: To provide a device that observes a speaker's action of speaking intentionally without vibrating the vocal cords, approximately generate a voice signal which would be obtained if the speaker vibrates the vocal cords as usual according to observation information, and sends the signal out through a communication line for use for communication by an electronic means. SOLUTION: A whisper voice is artificially converted into a normal voice signal by a means derived according to given pitch control information and a scheduled uniform or scene-adaptive rule as to time modified short-time autocorrelation function of a filtered input signal. Further, a compromise filter is provided which arbitrarily filters an artificial voice sound signal as the conversion result suitably to audibility. COPYRIGHT: (C)2004,JPO
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