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The current record holder for loudest crowd in history are the fans of the Seattle Seahawks, who cheered so loud that they induced a mini-earthquake. But that level of noise can permanently damage fans' hearing.
February 1, 2014 When fans of the Seattle Seahawks set the record for loudest crowd in history, they clocked in at 137.6 decibels, which is as loud as a jet engine during takeoff. Ear protection can prevent hearing loss, but even acoustics experts can have a hard time giving up the roar of the crowd.
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