The natural resonant frequency is the B-flat above middle C. Long exposure to the vuvuzela will turn your brain to scrambled eggs said Dr Wolf Vildeyeski expert on hypnosis. 'This increases the risk you will do stupid things on and off the pitch'.
The level of noise is too high ( 114dB) to even be allowed in a work place (where max = 85dB) About 100 vuvuzellas blowing at the same time towards someone's ear makes enough noise (140dB) to actually blow the eardrum. Many Vuvuzela’s blown constantly for 90 minutes create a hearing health care risk similar to that experienced by a goldminer drilling the rock-face. Scientists on the Space Station say its the only sound they can hear from earth and it is driving them mental.