@poeticg said:How can they be so loud? Aren't they just regular humans as are we? Is it something to do with the stadium design, or is there some simulated crowd noise going on???
Well for your edification and enjoyment, here's a comparison scale. I really have to doubt whoever took that 137 db reading as accurate. They have 115 db as "loud" rock concert- I might agree- if you're sitting 20' in front of the main speaker stack- as I was at an outdoor Pretenders concert way back. I thought I had a ruptured eardrum afterwards. @110, I can see the window glass in my man cave moving, and ditto feel the floor with any bass. PS- the KC Chiefs have a sound-o-meter, they hit 110 a couple of times during the game, and I thought that was accurate, and really loud . Made first Energy sound like a tennis match by comparison.
http://www.gcaudio.com/resources/howtos/loudness.html