Trevor Cox, president of the UK Institute of Acoustics, has an article in New Scientist explaining how they make their noise. http://www.newscientist.com/artic

Trevor Cox, president of the UK Institute of Acoustics, has an article in New Scientist explaining how they make their noise. http://www.newscientist.com/article/dn19041-what-makes-the-sound-of-vuvuzelas-so-annoying.html http://www.newscientist.com/article/dn19041-what-makes-the-s...