G Weighted Overall Level

G weighting purportedly reflects human response to infrasound. The curve is defined to have a gain of zero dB at 10Hz. Between 1Hz & 20Hz the slope is approximately 12dB per octave. The cut-off below 1Hz has a slope of 24dB per octave, and above 20Hz the slope is -24 dB per octave.

On a logarithmic frequency scale this is:

For further details refer to ISO 7196:1995

See also: A Weighting, B Weighting, C Weighting, Decibel, Infrasound.