Navy_Tech's Profile

Use liquid nails and the bottom half of Styrofoam or paper egg cartons and apply them over the entire ceiling with the points downwards. It creates an acoustic trap in the dead air spaces of the egg cartons, creates and interesting conversation piece, can be covered with other materials if you wish to hide them, is cheap and also works to block noise from your pace up. Works great for home theaters to prevent sound from bouncing around.