While the trichromatic theory defines the way the retina of the eye allows the visual system to detect color with three types of cones, the opponent process theory accounts for mechanisms that receive and process information from cones.
Cost of Soundproofing One Room. The cost to soundproof one room generally includes $170 to $250 for new materials, $190 to $300 for professional labor and $20 to $36 in tools needed to complete the job, though the prices will be higher for larger rooms and more complicated projects.
And that is: making the room/space AIRTIGHT. Sound travels best through the air-even small holes, cracks & crevasses. It is astonishing how much you can reduce the level of sound coming from a room by sealing it up around the door(s), window(s) & etc.Use weather stripping foam, caulk-whatever you have or can get.or a temporary setup, you could hang a bunch of heavy blankets (at least a few layers thick) on the walls and over the doors/windows. Of course, this will cost much more than $50 if you don't already have the blankets, but you can often rent moving blankets from U-Haul.