I don't really understand why this is treated like such a simple topic, nor why players should be expected to read an oft unreliable wiki page to try and decipher this totally opaque topic. If it is a feature of the game, the game should make some effort to illustrate it and explain it. (Unless noise is an easter egg, in which case I'm totally scared of the end product). I still can't recall whether the center or the edge of a workshop generates sound.
"Basic counting skills" don't really apply to 3D space, especially since trying to coordinate between z-levels and movement in the x/y planes is already an exercise in self-doubt. It's hard to even tell when you screw up placing your noisy workshops or furniture, unless you constantly flip through the thoughts of your dwarfs and make spreadsheets to track their bedrooms. Hell, just a "Noisy" or "Quiet" tag when loo'k'ing would be appreciated. Sound currently has no visual/spatial coordination, whereas most other problems in a fort have noticeable consequences - miasma, dust, vomit, growing pools of bright red tildes/integers.
Granted, things like this will probably be explained in the eventual tutorials, and I'd imagine sound will be updated at some point.