Oh, I'm incredibly happy that I've found this. To be honest, I really dislike the "stock" voice from the game. It's much too robotic and harsh. I understand that it is supposed to sound robotic, but it's just way too much.
Is there any chance this could be actually integrated into the base-game? Maybe you could work out a deal for that, so everyone wins?
It really would be nice to get some "official" options for voices, especially for new players who also find the computer voice a bit over the top. In general, options for subjective things are probably always a good idea. (Could be swapped either from the options, or somehow on a per-save/per-character basis).