The bias induced by the Goodman algorithm

The bias induced by the Goodman vibration-coherent corrections algorithm is corrected by dividing the spectrum by [math]\displaystyle{ 1-\frac{1.02N_v}{N_f} }[/math] where [math]\displaystyle{ N_v }[/math] is the number of signals that are used to remove coherent signals in the shear-probe signals and [math]\displaystyle{ N_f }[/math] is the number of fft-segments that are used to estimate the shear-spectra.