Tube’s analysis showed that a standard Vuvuzela has a fundamental tone at 233Hz, with overtones at 466, 932 and 1864Hz. Most TV speakers can’t reach down to 233Hz, so it’s those overtones that create the swarm-of-bees effect that drives you to madness during a match.

To create the filter, Tube ran the TV sound to his Mac Mini running Logic Express, but any program that lets you filter out a narrow band of audio frequencies should work. A New York City sports bar is apparently doing the same thing with a simple graphic equalizer.