Futbol Sounds

Was there ever a less melodious B flat than the drone of the vuvuzela throughout the World Cup matches this year?

Vuvuzela Sound Clip

The BBC is considering filtering the sound from its broadcasts.

You can see in the spectrum plot that the peaks approximately follow the harmonic series from the fundamental pitch of B flat below middle C (228 Hz): an out of tune octave above (440Hz), about fifth above that (629 Hz), another B flat (907 Hz), then D a third above that (1191 Hz).

A  mathy workaround for television viewers is described in
this short article from  Gizmodo about the vuvuzela.

Using the notch filter in Audacity, here are the results of removing the overtones one at a time:
Original sound clip
Fundamental removed
Two overtones removed
Three overtones removed

The remaining buzz seems to be a bunch of non-harmonic noise that is not so easily filtered out.