8. The voice conversion system according to claim 7 , wherein the voice conversion means comprises: an intermediate voice conversion means for generating the speech of the intermediate speaker from the speech of the source speaker by using the intermediate conversion function; and a target voice conversion means for generating the speech of the target speaker from the speech of the intermediate speaker generated by the intermediate voice conversion means by using the target conversion function.
7. A voice conversion system comprising: a voice conversion means for converting the speech of the source speaker to the speech of the target speaker using the functions generated by the voice conversion training system according to any one of claims 2 to 6 .