BBC is working on a vuvuzela-free version of its 2010 World Cup Coverage says this Daily Mail article.

When the talk of banning the obnoxious horn sound was first discussed, I expressed a lot of confusion why they needed to bother. The vuvuzela operates in a distinct and quite narrow sound range. Sound engineers are sort of good at this sort of thing, and one would expect the BBC to employ one or two of them. Yet the BBC is only talking about cutting the ambient stadium noise and including the silence of their commentary.

Is there some engineering reason this option is not available for the World Cup?