| 摘要 |
a hamming window in which window size and shift amount are added to the voice signal of an A/D converter; an autocorrelation analyzer for obtaining autocorrelation coefficient and linear prediction coefficient from the voice signal of the hamming window; a peak energy frame detector for finding a frame having the maximum autocorrelation coefficient from the autocorrelation coefficient of the autocorrelation analyzer, a distance measuring circuit for measuring relative distance between both-side time axes at the maximum frame of the peak energy frame detector; a smoothing/differentiator for removing a peak component from the distance value of the distance measuring circuit; and a decision logic for detecting the transfer section and end point of voice from the final distance value of the smoothing/differentiator, thereby accurately detecting the transfer section as well as the end point.
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