Assignment 6: Calculations Do the following on paper, scan or photograph your work, and submit it. You have a room that is 4 m long, 7 m wide, and has a ceiling height of 3 m. The floor is hardwood

Absorption Coefficient

We measure absorption using a ratio of the sound power absorbed to the sound power incident on the surface. We call this ratio the absorption coefficient. It is expressed as a decimal, and designated by the Greek letter alpha:

Assignment 6: Calculations Do the following on paper, scan or photograph your work, and submit it. You have a room that is 4 m long, 7 m wide, and has a ceiling height of 3 m. The floor is hardwood 1

For example, if 2 W of sound power were to be directed at a surface that absorbs 1 W, the absorption coefficient would be:

Assignment 6: Calculations Do the following on paper, scan or photograph your work, and submit it. You have a room that is 4 m long, 7 m wide, and has a ceiling height of 3 m. The floor is hardwood 2

Assignment 6: Calculations Do the following on paper, scan or photograph your work, and submit it. You have a room that is 4 m long, 7 m wide, and has a ceiling height of 3 m. The floor is hardwood 3

Because absorption coefficient is a ratio, it has no unit associated with it. It ranges from 0, which indicates a surface that is completely reflective, to 1, which indicates a surface that is completely absorptive.