Talk:VOCALOID4/@comment-53539-20150413081414/@comment-26078132-20150425015143

Realitone, the company which made Realivox Blue, has another software called Realiwhistle...and it is basically synthesized whistling. Since this has been done, I could see whistling eventually becoming a feature of VOCALOID, or perhaps a separate partner type software, or even possibly a part of VOICEROID.