Voice intonation control

Vocal correction software, like celemony melodyne, use special markers and corrections to alter the voice intonation, expression and pitch. I know it is difficult to develop, but either add this or train the AI so it becomes more realistic. Sometimes the voice engine does not put the right intonation on a word, misses to add some small pauzes all to make it more realistic. Without this, custom voiceover is the only thing that can work to make sure the video feels realistic.