Will the vuvuzela be a problem at the World Cup? According to the South African medical journal yes!
South African standards for occupational noise required hearing protection for workers exposed to levels of 85 decibels and above. 10 football fans attended a PSL game at a 30,000 seater fifa approved stadium and wore personal sound exposure meters and had them fixed to their shoulders.
The researchers said the average sound exposure experienced by the participants during the almost two hours they spent in the stadium was 100.5 decibels. The peak exposure exceeded 140 decibels for eight of the ten participants, with the maximum peak reaching 144.2.