Whether you need to keep noise in a room (your son is a drummer in a band) or keep noise out of a room (you need peace and quiet from your kids in your home office while you work), sound proofing can help. There are 4 main types of sound proofing. The most basic is adding mass, which is putting more things in the way of the noise. You can also absorb the sound with fluffy insulation. Another option is to disconnect the items in your home that will vibrate...