Topical Terminology > Noise Reduction Coefficient
1 Definition
Noise Reduction Coefficient
For Noise Reduction Coefficient we have a term and definition in Noise Control Engineering.
Noise Reduction Coefficient (Noise Control Engineering) 
Arithmetic mean of sound absorption coefficients at 250, 500, 1000, and 2000 Hz, rounded to the nearest 0.05 metric sabin per square meter.
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