DEVICE, METHOD AND COMPUTER PROGRAM STORED IN COMPUTER-READABLE MEDIUM FOR VOICE CONVERSION USING CHANGE OF MDCT ENERGY ACCORDING TO FORMANT CHANGE

摘要

The present invention relates to a device, a method, and a computer program stored in a computer-readable medium for voice conversion using a change of MDCT energy according to a formant change. According to an embodiment of the present invention, the device for voice conversion includes: a reception unit which receives a voice signal; a spectrum envelop extraction unit which extracts a fast Fourier transform spectrum envelope; a formant location transformation unit which seeks a modified fast Fourier transform spectrum envelope (M-FFT SP); a gain obtainment unit which obtains a gain; a modified discrete cosine transform coefficient (MDCT) energy transformation unit which seeks an energy modified MDCT coefficient (EM-MDCT CE) in a log MDCT spectrum; a restoration unit which restores the voice signal to a tone modified signal in a time area; and an amplitude adjusting unit which adjusts an amplitude of the tone modified signal.;COPYRIGHT KIPO 2016