Clapping
Clapping is when you hit your hands together which makes a sound. The harder you hit, the louder the sound, the softer you hit, less the sound. If hitting by means of hand to hand contact it will make a different sound than if you were to clap against another object, say, your leg.
Clapping Media
The previous world's fastest clapper Kent French claps for Firefox.
'Viking clapping' of Iceland fans