It a simple idea to have a tool in game that would allow the GM or even the player to make minor alteration to their voice in game to create a specific mood and atmosphere of course it would be use to create inhuman sound from a range of entitys like mythical creature or machine even voices that would be ordinarily impossible for a normal human although there are some people out there who are great at manipulating their vocal chord without such a tool but it does expand realism in the game itself and seem like a handy tool for a GM.
