Re: Supersonic crack with suppressor
A faster bullet would produce a denser wave, which you would perceive as being a more abrupt crack/boom -if it passed you by downrange. Same with a larger or lower BC bullet.
But this is dragged downrange(with the bullet) from the muzzle, and all you would hear of it are reflections off the environment.
What you'll hear shooting the gun is the pressure release, at a rate afforded by the suppressor given the amount of gas you're releasing into it and designed affect on that gas release(capacity).
When the load exceeds suppressor capacity, then the local sound would get louder.