Yahoo Sport 
Celtic receive indisputable evidence of ear-damaging racket as Fortress Paradise rips up the record books
Celtic fans' roar when Nicolas Kuhn put them ahead in this week's Champions League showdown was the second-highest noise ever recorded in a sports stadium in Europe, according to German media.
And the decibel levels reached were so extreme, that hearing experts warn it could have caused damage to the ears and is likened to the sound of a jackhammer. The Hoops enjoyed one of their best-ever European nights when they came from behind to beat Bundesliga high-fliers RB Leipzig 3-1.
And newspaper Leipziger Volkszeitung took decibel readings of the key moments of the evening.
They report that Kuhn's goal in injury time of the first half saw the noise level reach a staggering 129 decibels - which is described as being at the same levels as a jet taking off.
Hearing experts have stated: "129 decibels is an extremely loud level of sound that can cause immediate and permanent damage to the human ear.
"It is equivalent to the sound of a jackhammer or a thunderclap, and prolonged exposure can lead to hearing loss."
The current world record is 142.2 decibels reached at Kansas City's Arrowhead Stadium ten years ago for an American football match against New England Patriots. The European record is 131 decibels set by Galatasaray fans in an Istanbul derby against Fenerbahce in 2011 at their Ali Sami Yen Spor Kompleksi Stadium.
An Old Firm cup final at Hampden in 2018 was measured at a peak of 115 decibels. The newspaper listed the extremes of noise recorded at Parkhead with both Kuhn's goal and the roar that greeted the half time whistle reached 129 decibels. Both Kunh's first half equaliser and Reo Hatate's goal to make it 3-1 were registered at 121 decibels.
