The vuvuzela , also known as lepatata (its Tswana name), is typically a 65-centimetre (2 ft) plastic device that requires the flow of air to produce a loud monotone note,. A similar device, known as the corneta, is used in Brazil and other Latin American countries. Many types of vuvuzela, made by several manufacturers, may produce varying intensity and frequency outputs. The intensity of these outputs depends on the blowing technique and pressure exerted.
Traditionally made and inspired from a kudu horn, the vuvuzela was used to summon distant villagers to attend community gatherings. The vuvuzela is most used at soccer matches in South Africa, and it has become a symbol of South African soccer as the stadiums are filled with its loud and raucous sound that reflects the exhilaration of supporters. The intensity of the sound caught the attention of the global soccer community during the 2009 FIFA Confederations Cup in anticipation of South Africa hosting the 2010 FIFA World Cup
The vuvuzela has been the subject of controversy. Its high sound pressure levels at close range can lead to permanent hearing loss for unprotected ears after exposure, with a sound pressure of 120 dB (the threshold of pain) at 1 metre (3.3 ft) from the device opening
"Alfovozhela" and ringing in the ear
This comes at a time in which he warned President Dirk Heinrich Association of Medical Doctors ear, nose and throat in Berlin listening to the trumpeters, adding that it can lead to disease "Buzz" but also deaf. Said Heinrich that this machine can cause damage to the ear can not be treated later as they produce sounds of up to force his opinion to the 120 130 dB. The Heinrich that when approaching "Alfovozhela" of the ear, "this force acoustic match, which affects the ear when you run the drill Electrolysis (Alhanior) or the hum of aircraft take-off. "He also pointed out that Heinrich Alfovozhela can lead to severe pain in the ear, then the impact of noise gradually lead to deafness can also result from the Sphere and the continuous rattle them.