SOUND QUALITY MODEL GENERATION METHOD, SOUND QUALITY CONVERSION METHOD, COMPUTER PROGRAM FOR THEM, RECORDING MEDIUM WITH PROGRAM RECORDED THEREON, AND COMPUTER PROGRAMMED WITH PROGRAM

摘要

PROBLEM TO BE SOLVED: To control sound quality with a small number of parameters.;SOLUTION: A sound quality conversion method, in which the sound quality of an input speech waveform 50 is converted by using a glottal waveform model 36 consisting of a pair of a prototype sound chords wave made to correspond to prescribed sound quality and the prescribed number of main component expressions from the head obtained through a main component analysis of the prototype sound chords, includes a unit waveform extraction step 60 of extracting unit waveforms of the sound chords wave from parts meeting prescribed conditions respectively; and voice waveform generation steps 62 and 64 of generating an output speech waveform generated by converting the input voice waveform 60 to sound quality prescribed by a user on the basis of a glottal waveform model corresponding to sound quality prescribed as the sound quality of the input voice waveform and a glottal waveform model corresponding to sound quality prescribed by the user.;COPYRIGHT: (C)2005,JPO&NCIPI