There is no substitute for an Acoustical Consultant, this calculator is a elementary tool to help determine your basic needs. Please contact us for help in finding your local Acoustical Consultant.
Hard, reflective, nonporous interior building surfaces such as glass, wood, plaster, brick and concrete absorb 2% to 5% of the sounds striking the surface and reflect 95% or more of the sound. Absorption coefficients are expressed as a percentage of sound absorbed. A perfect sound absorber is an open window since it permits 100% of the sound to escape and not return.