Around the NFL Week 13

[donofriose]

Originally Posted by Giantone

It's not the stadium , it's the fans in the stadium .

A major part of it is the design of the stadium. The canopies that are designed to cover the fans from ran (Seattle gets a lot of rain as I am sure you know) also trap the sound making it basically a sound tunnel. It is really the reason why there is such a difference between Seattle's stadium and other outdoor stadiums throughout the league.