The architects behind planned Kansas City Chiefs stadium want it to be as noisy as possible

The Kansas City Chiefs were taking on the New England Patriots on September 29, 2014, when, with just eight seconds to go in the first quarter, the volume of the crowd’s roar reached 142.2 decibels. That’s about as loud as a jet engine taking off, and good enough to break the Guinness World Record for loudest crowd roar at a sports stadium. A new Chiefs stadium might help them break it again. [Rendering: courtesy Kansas City Chiefs Football Club Inc.] The Chiefs previously set the record for loudest crowd in 2013 at 137.5 decibels, which was broken later that year when the crowd at Seattle’...