The loudest crowd roar at a sports stadium was 131.76 dbA and was achieved by Galatasaray Spor Kulubu (Turkey) at the Ali Sami Yen Sport Complex Turk Telekom Arena, in Istanbul, Turkey, on 18 March 2011.
A peak reading of 131.76 dBA was recorded during the Galatasaray SC v. Fenerbahce SC derby game at the Ali Sami Yen Sport Complex Turk Telekom Arena on 18 March 2011. The record was attempted by Galatasaray SC fans. The sound level was measured from the side line of the stadium. Distance to the crowd was 2 meters. They were given 3 attempts. The first attempt was at 20:50 pm, it measured 112.08 dbA. The second attempt was at 21:03 pm and measured 130.55 dbA. The third attempt took place at 21:15 pm and produced a reading of 131,76 dbA. A notary and one witness (sound engineer) were present. The precision measuring noise level meter (certified and calibrated) was a Bruel & Kjaer 2250 RAM DT-8850. This was the first derby game which took place at the brand new home (stadium) for Galatasaray SC and its fans. 49,488 fans of Galatasaray SC and 2,500 fans of Fenerbahce SC were counted that day. The game was finally won by Fenerbahce SC, 2 - 1.
Please note: Comments below may relate to previous holders of this record.