Cube Breath is a free vocoder VST plugin developed by xoxos. Compatible OS(s): Windows.
Cube Breath is a standalone application for Windows created with SynthEdit and SAVIhost, but will also run as a VST effect. It is a realtime, fully automatic pop music generator. Audio input is vocoded in tune with the music, allowing the user to “instantly transform their shopping list, answering machine messages or office memos into floor-filling number one hit singles”.
https://www.kvraudio.com/developer/xoxos