Weren't we able to do this before AI? I'm not sure I get what AI is bringing to the table/value-adding for this particular technology, except marketing hype.
It was a bit more complex than that, but that's more or less what this software, which claims the benefits of AI, is doing. It's not, near as I can tell, changing inflection or tone or doing anything other than changing the pitch and maybe adding some frequencies.
It's not even producing natural tones. None of the voices they're demoing sound real in any way. It's a toy, no more, no less.