air absorption calculator

This calculator displays two functions in accordance with ANSI S1.26-1995. Firstly, attenuation by air absorption for all frequencies for a single point in space based on distance, temperature, relative humidity and atmospheric pressure. Secondly, the attenuation value from temperature versus relative humidity, for a single frequency.


  • in accordance with ANSI S1.26-1995
  • 3 frequency responses (48 points-per-octave)
  • normalization
  • cut-off frequency (-6 dB)
  • attenuation: temperature vs. relative humidity

file type: Microsoft Excel Open XML spreadsheet (.xlsx)

minimum requirements:

  • Excel 2007 or higher
  • Excel 2008 or higher

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