| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that an optimum speech signal segment is not always selected and sufficient sound quality can not be obtained by a conventional device and method for speech speed conversion since positions of two speech signals to be weighted and added are unequivocally determined based upon a time axis conversion ratioα, a speech signal segment length Ts, and a shift time Tc with which a correlation function of last weighted addition becomes maximum. SOLUTION: A device is equipped with a similarity calculating circuit which finds the similarity between the two speech signal segments, a judgement circuit which detects a value with a large similarity value among similarities that the similarity calculating circuit finds while shifting one of the two speech signal segments and delaying the segmentation time of the two speech signal segments, and a parameter storage circuit which stores a parameter when the similarity that the judgement circuit detects is high, and selects a combination of speech signal segments which have a high similarity and are suitable to weighted addition. COPYRIGHT: (C)2005,JPO&NCIPI
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