If you've ever been curious how you sound to others. Place two folders(or your hands) sideways. In front of your ears.

CaptionThis is nothing new, but it's a very useful tactic for any practice that requires control of the voice(singing, rapping, voice acting, announcing, etc.) It gets rid of the inner ear vibrations, the thing that makes you sound deeper/higher than you actually are, and shows how your voice sounds outwards, not inwards.If you do this, be prepared to feel very uncomfortable, initially.