VOICE ISOLATION DEVICE, VOICE SYNTHESIS DEVICE, AND VOICE QUALITY CONVERSION DEVICE

摘要

A voice separation device includes: a PARCOR calculation unit (102) which extracts vocal information from an input voice signal; a filter smoothing unit (103) which smoothes the vocal information extracted by the PARCOR calculation unit (102) within a first time band; a reverse filter unit (104) which calculates a filter coefficient of a filter having a reverse frequency amplitude response characteristic of vocal information which has been smoothed by the filter smoothing unit (103); and a sound source modeling unit (105) which cuts out a waveform contained in a second time band shorter than the first time band from the input voice signal which has been filtered by the reverse filter unit (104) and calculates sound source information from the waveform.