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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)

The NR-diagram with the default values from above:

NR - Noise Rating diagram - example

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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.

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