Here's something no one ever has brought up yet:
Most baseball parks, Like RFK, have a cover partially over the stands at the highest point, creating a lid the sound waves bounce off and and back onto the field.
Think of the trajectory of a pool cue ball you hit off the rail:
- angle of incidence equals angle of reflection
The partial roof traps the sound in, and reflects it into the bowl, thus magnifying it.
The open bowl shape of FED EX allows much more sound to escape, the passing C-17's on the way to Anders AFB could hear it.
Thus, a crowd making the same noise at RFK would sound quieter at FedEx.
My seats are way up in level 402, and we are screaming our nuts off. Believe me.
J-Dawg