9. The voice conversion system according to claim 7 , wherein the voice conversion means converts the speech of the source speaker to the speech of the target speaker by using a composed function of the intermediate conversion function and the target conversion function.
9. The voice conversion system according to claim 7 , wherein the voice conversion means converts the speech of the source speaker to the speech of the target speaker by using a composed function of the intermediate conversion function and the target conversion function. 15. The voice conversion system according to claim 9 , wherein the voice conversion means converts a spectral sequence that is a feature parameter of speech.