Strutt|Criteria|Curves|Sound Levels|H inserts the H-weighting curve into the current row on the selected spreadsheet, in either 1/1 octaves or 1/3 octaves.
The A-weighting, especially at high frequencies, does not follow human auditory sensitivity. The H-weighted noise level is a sound pressure level weighting for humans which results in a true comparison of the sound signal weighted according to the hearing capabilites of man.
The 1-octave curve is based on the consolidated third octave curve.
See also Weighting Curves
References: