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Published on Jun 18, 2010
I'm a physics professor who does research in acoustics and vibration, and when one of my students brought me a Vuvuzela to play with, we had to test it in our acoustics lab to see how loud it gets, and what frequencies it produces. It turns out that these things can be dangerously loud (loud enough to cause serious hearing loss). They also produce a large number of frequencies that can mask some of the sounds necessary for hearing and understanding human speech.