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 Costs will vary according to the style selected, but according HardwoodInstaller.com the average job (including removal of moldings, placement of vapor barriers or foam underlay, and cutting to size) will be roughly $8.25 per square foot. 2  For the living room project this translates to a total cost of $2063.here are solid and engineered woods, and there are also site finished and pre-finished options too. For this discussion, we will consider the materials and costs for the installation of a prefinished hardwood floor in the average 250 square foot living room.