gbondo9
p3n
I found this today and it's really helped me: http://www.bobgolds.com/AbsorptionCoefficients.htm
Just in case you dont know what NRC is - here ya go: http://en.wikipedia.org/wiki/Noise_Reduction_Coefficient
While I'm at it - here's STC: http://en.wikipedia.org/wiki/Sound_transmission_class
Enjoy!!
Todd
Just in case you dont know what NRC is - here ya go: http://en.wikipedia.org/wiki/Noise_Reduction_Coefficient
While I'm at it - here's STC: http://en.wikipedia.org/wiki/Sound_transmission_class
Enjoy!!
Todd
