What is noise reduction coefficient, NRC? What is the unit of measurement of NRC? What are the theoretical minimum and maximum values NRC?
What will be an ideal response?
The NRC is the average value of the sound absorption coefficient, ?, of a material between the frequencies of 250 Hz, 500 Hz, 1 kHz, and 2 kHz. The value of NRC varies between 0 and 1.
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