| 摘要 |
PROBLEM TO BE SOLVED: To provide a speech-rate conversion device which performs adaptive speech-rate conversion of an input signal, and to provide a program. SOLUTION: The speech-rate conversion device 1 includes: a physical index calculating part 2 which, for each segment obtained by dividing an input signal into unit time, calculates a physical index of the input signal; and a speech-rate conversion factor determination part 3 for performing speech-rate conversion by determining speech-rate to be designated to each segment of the input signal, according to the physical index calculated by the physical index calculation part 2. The speech-rate conversion device 1 performs speech-rate conversion by determining a speech-rate conversion factorαn to be designated to each segment of the input signal, by using one or more "physical indexes" among a voicing degree Un expressing a relative maximum value obtained by autocorrelation per unit time in the input signal, an irregularity degree Sn expressing change tendency of loci of fundamental frequency and pseudo-fundamental frequency per unit time in the input signal; and a division band power ratio En expressing a ratio between a low region power component and a high region power component, which are divided in bands per unit time in the input signal. COPYRIGHT: (C)2011,JPO&INPIT |
