Cacophony:

1. harsh discordance of sound; dissonance: a cacophony of hoots, cackles, and wails.
2. a discordant and meaningless mixture of sounds: the cacophony produced by city traffic at midday.


A must read on life here in Cairo and our "cacophony"...

http://www.startribune.com/world/17925979.html?page=1&c=y