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.
Paying for a safe room. Including an 8-by-8-foot safe room in a new home under construction can cost up to $8,700, according to FEMA. A 14-by-14-foot safe room can cost as much as $14,300.FEMA says there can be big variations in the costs, depending on the size of the safe room, its location in the home and other factors.nder these guidelines, you could expect your safe room to withstand 250 mph winds and the impact of a 15-pound plank hitting a wall at 100 mph, according to the Insurance Institute for Business and Home Safety, or IBHS.