I'm thinking of purchasing fiberglass duct board to place on the bottom half of my walls (below the chair rail) but I don't know how to rate the products. Most of the specs are displayed according to sound absorbtion coefficients that compare the thickness of the product to the frequency.
The frequencies listed start at "125" (Hz), and proceed to "250", "500", "1000", and "NRC". The respective sound absorbtion coefficients are: .07, .25, .63, .90, and .70.
How do I translate these numbers into something that's meaningful?
Thank you.
SteveN
The frequencies listed start at "125" (Hz), and proceed to "250", "500", "1000", and "NRC". The respective sound absorbtion coefficients are: .07, .25, .63, .90, and .70.
How do I translate these numbers into something that's meaningful?
Thank you.
SteveN