If you are traveling at supersonic speeds, can you hear yourself talk?

Well the source (your vocal cord) is stationary with respect to the air it is affecting (such as a cockpit in a concorde).

That's if you were referring to the occupants of a supersonic aircraft. However, if you were referring to talking while the air around your body is travelling at supersonic speeds, then there are 2 situations:

1. You die because you're too weak to withstand air rushing past your body at supersonic speed (very very likely)

2. You survive the air and talk, but you hear the sound of your voice reverberating through your flesh and into your cochlea, rather than the situation which would happen in which you're stationary and you hear both the sound of your voice reverberating through your flesh and through the air between your mouth and your ear.

So in all cases, assuming you survive supersonic winds, yes, you will hear yourself.

You could always hear yourself talk, even if you were riding on the outside of an airplane flying at supersonic speed, because the sound of your voice is also conducted to your ears by your own body, in which the speed of sound is much greater than it is in air.

However, wind noise would drown this out, and aerodynamic drag from the supersonic air flow would injure you.

If you are inside a cabin or cockpit of an airplane flying at supersonic speed, you can hear things quite normally, since you, the air in the cockpit, and the airplane itself are all traveling at the same speed.

If the air directly in contact with you is going supersonic, you probably would not be conscious (or alive) long enough to hear anything. The air inside the cabin is static though, so yes, you can hear anything happening in the cabin.

If your in an enclosed area i.e. a cockpit then yes if you outside of a plane trust try talking it would be pretty hard

yes but it will be heard behind you because your going faster than sound

In a pressurized area, of course. If you're not in a pressurized area you're no longer alive so, no, you wouldn't hear anything.

Guitar Guy wins.

No. None of the Concorde passengers could hear each other.

nope