Noise is a significant category, noise leads to a large number of domestic disputes every year, with significant police involvement. uk.d-i-y has a steady trickle of complaints about noise and asking what to do about it. Naturally more articles on other aspects of noise reduction will crop up later.
Hence I dont see the logic in removing the noise category from this noise reduction article. NT 09:57, 22 April 2007 (BST)
I was looking at the Special:Categories page and trying to weed it down a bit so there weren't so many categories with just one member. I'm happy if you want to revert it. --John Stumbles 12:20, 22 April 2007 (BST)