It's done automatically?! That's amazing, I dunno why people arent mentioning that
Once you have the sound file, you click a button, and it creates a matching animation, yes. The only issue, is that all the functions for batch generation seem to be broken, so you have to manually click the button for every single one. My current mod will have like 8000 voice files... that's a lot of clicking.
Though it's still FAR better than what we had to do with Fallout.