What is the buzzing noise on televised soccer games?

Answer 1

The humming noise at a soccer game is usually done by a South African horn called a "vuvuzela". It is a stadium horn, Fans blow into this horn which is approximately one metre in length.

Answer 2

in the world cup? South Africa is home to an instrument called the vevezula. fans blow on this Trumpet style instrument and it makes a buzzing sound

Answer 3

You may recall the panic over the disappearance of the bees two summers ago. Scientists discovered that they all migrated to South Africa, so you're hearing them buzz.