听力预防保健
呜呜祖拉(vuvuzela)是乐器还是凶器？
最近，专家开始就关于南非世界杯上火爆的呜呜祖拉展开探讨，他们通过声学测量，发现呜呜祖拉制造的声音到达耳朵能达到127dB，远高于剪草机（90dB）和链锯（100dB）。他们开始进一步探索。
持续性暴露在85dB下可能会造成我们永久性听力损失，并且如果暴露在100dB下的化，15分钟就会使我们的听力收到损伤。
最近的测试研究显示，人群噪音加上呜呜祖拉常常会超过130dB，在世界杯前的南非国内足球联赛上，Pretoria大学做的测试显示，当足球比赛有30000名观众时，峰值高达137dB，每场比赛的平均噪音是100dB。
The experts start the debate about the risk of hearing damage from the vuvuzela when they conducted sound measurements, which found that it reached an ear splitting 127 decibels (dB) - louder than a lawnmower (90 dB) and a chainsaw (100 dB). And now they have taken things a step further.
Continuous exposure at just 85 dB puts us at a risk of permanent noise induced hearing loss, and when subjected every working day to 100 dB or more, hearing damage can occur in just 15 minutes. Recent measurements at big games have shown the combined noise of the crowd and their vuvuzelas to almost constantly exceed 130 dB - even at a South African Premier League soccer match that took place before the World Cup, measurements conducted by the University of Pretoria indicated peaks of 137 dB, and an average of 100 dB over the match, when there were only 30 000 fans in attendance.
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