Topical Terminology > Noise Reduction Coefficient (Nrc)
1 Definition
Noise Reduction Coefficient (NRC)
For Noise Reduction Coefficient (NRC) we have a term and definition in Insulation.
Noise Reduction Coefficient (Nrc) (Insulation) 
A single number rating, the arithmetic average of the individual sound absorption coefficients of a material at 250, 500, 1000 and 2000 Hz to the nearest .05.
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