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.
1 With some additional costs for underlayment and matching baseboards/trim, it can run $450-$950 for basic laminate materials for a 20x20-square-foot living room. 2  Laminate prices are based in large part on how realistic-looking the flooring is; inexpensive laminate may look artificial.