"like you have a reserve energy tank." The noise of the crowd can have a significant impact on the players on the field. In American football, an extremely loud crowd can prevent the offensive linemen from hearing the snap count. This can have the effect of making the player slower to react when the ball is snapped, and his eventual response may be weaker than normal because each play is begun "with some indecision and doubt". The noise can also prevent players from hearing audibles and can make it difficult for the team's offense to coordinate plays in the huddle. The effect of the noise can often be measured in mistakes, such as false start penalties. Coaches can take steps to minimize the effect of the crowd noise on their teams. Some American football teams bring large speakers to their practice fields and broadcast loud noises such as jet engines to prepare their teams for the anticipated noise level. Crowd noise tends to diminish after a long lull in play, such as a pause for instant replay. Former NFL player Brian Baldinger speculates that some coaches draw out reviews as part of a coaching strategy to quiet the crowd for their next play. A researcher from Harvard University discovered in a study that some association football referees appeared to be impacted by crowd noise. His studies revealed that a home team acquired an additional 0.1 goal advantage for every 10,000 fans in the stadium. Delia Smith, Norwich City's joint major shareholder, received some attention when she took to the pitch during a half time interval, with a microphone in hand and Sky TV cameras in tow, to tell fans the side "need their twelfth man". "Where are you?" she cried. Norwich City lost the game in the final seconds, but Smith's passion worked to increase the affection the fans held for her. The current naturally loudest football stadium is Nef Stadium in Istanbul home of Galatasaray S.K.. As a prepared attempt, the current world record for crowd noise at an athletic event was set on September 29, 2014, when the Kansas City Chiefs hosted the New England Patriots. Noise during that event reached a high of 142.2 decibels during a timeout. Texas A&M trademark Texas A&M University applied on December 26, 1989, for trademark U.S. Ser. No. related to usage of the term. The United States Patent and Trademark Office