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Noise Rating (NR) - Free Online Calculator

An online Noise Rating (NR) calculator.

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The calculator below can used to calculate the NR - Noise Rating:

Sound Pressure Level (dB) - Octave band mid-frequency (Hz)

31.5 Hz

62.5 Hz

125 Hz

250 Hz

500 Hz

1000 Hz

2000 Hz

4000 Hz

8000 Hz

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The NR-diagram with the default values from above:

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Related Topics

Acoustics - Room acoustics and acoustic properties, decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation.
Noise and Attenuation - Noise is usually defined as unwanted sound - noise, noise generation, silencers and attenuation in HVAC systems.

Related Documents

NC - the Noise Criterion - Noise Criterion - NC - level is a standard uesd to describe the relative loudness of a space within a range of frequencies.
Noise Criterion (NC) - Free Online Calculator - Calculate Noise Criterion (NC) from octave band pressure levels.
Noise Criterion vs. Noise Rating and dB(A) - Comparing Noise Criterion (NC, NCB, RNC) to Noise Rating (NR) and dB(A).
NR - the Noise Rating Curve - The Noise Rating (NR) Curve used to determine acceptable indoor environments for hearing preservation, speech communication and annoyance.
Octave Band Frequencies - The octave and the 1/3 octave band frequencies.
PNC - the Preferred Noise Criterion - A noise measurement system for continuous or ambient noise in indoor environments.
Preferred Noise Criterion (PNC) - Calculator - An online Preferred Noise Criterion (PNC) calculator.
Sound - Frequency, Wavelength and Octave - An introduction to the nature of sound with frequencies, wave-lengths and octaves.
Sound Pressure - Sound Pressure is the force of sound on a surface perpendicular to the propagation of sound.
Ventilation Systems - Acoustic Calculation Procedure - Acoustic noise calculation procedure HVAC systems.

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