If you're going faster than the speed of sound and you yell out..?

Will you be able to hear yourself or will it be left behind you? Kinda like a projectile weapon, if you're travelling at X speed and the projectile travels at Y velocity under normal circumstances then with you going at X the projectile will be travelling at X+Y speed. So If I'm travelling faster than ~1200 FPS and I yell out will I hear myself?

Obviously I will never be able to travel at ~1200 FPS since I would probably disintegrate, but that's not part of the question.

All legitimate answers appreciated.