I disagree that's in the opposite direction. Hawking didn't want to change his voice - he'd had this for years at that point, and the option was also to just ch

I disagree that's in the opposite direction. Hawking didn't want to change his voice - he'd had this for years at that point, and the option was also to just change to a different arbitrary voice rather than restoring what he had before. Something like this could let someone keep their "original" voice. Hawking may have preferred to have something that sounded like his voice before he lost it than a completely new voice.