The PNC-diagram with the default values above are indicated below:
Room acoustics and acoustic properties, decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation.
Noise Criterion - NC - level is a standard uesd to describe the relative loudness of a space within a range of frequencies.
Acceptable noise - dBA - level at typical common locations.
The noise level should not exceed certain values to protect public health and welfare.
Calculate Noise Criterion (NC) from octave band pressure levels.
An online Noise Rating (NR) calculator.
The Noise Rating (NR) Curve used to determine acceptable indoor environments for hearing preservation, speech communication and annoyance.
A noise measurement system for continuous or ambient noise in indoor environments.
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