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There is a way to quantify how much sound is reflected in a room by using a metric called the absorption coefficient. This is accomplished by. Image Result For Sound Absorption Coefficient Chart Cork Sound Absorption Sound Proofing Polyurethane Foam What is Sound Absorption. . The absorption coefficient or sound absorption coefficient is defined as the portion of sound energy incident on a materials surface that is not reflected. Acoustic Fencing and Barriers. Absorption coefficient for an acoustic material is best described as. I have substituted the acoustic pressure from ANSYS into the transfer function equation as. It is the ratio of absorbed energy to incident energy and is represented by α. We had an absorption coefficient of 62. The sound absorption coefficient is the ratio of reflected energy that strikes our sample size to the amount of energy absorbed by our sample size. Absorption coefficients o...