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.
Many homeowners are concerned about the cost effectiveness of using soundproof drywall in their home. Soundproof drywall is definitely expensive, costing $40 or more for a single sheet compared to standard drywall that costs an estimated $10 per sheet. Still, the math is fairly simply, even at the cheap price of $10 each, eight sheets of drywall costs twice as much as a single sheet of a soundproof option. In addition to cost, layering drywall isnât always possible, eight sheets of drywall is too heavy for the ceiling and takes up valuable floor space.