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 Mid-range flooring (about five piles in the core and a slightly thicker wood veneer) costs around $8-$15 a square foot for a standard installation and $10-$18 for a more difficult project, making total costs for a 20x20-foot living room about $3,300-$6,300 with standard installation and $4,100-$7,500 for complex work.