Fig. 8.
Normalized fit error of the power-law fit applied to αsample(f) with respect to the laboratory-estimated power-law model vs the α-estimation length. Each curve corresponds to a different spectral estimation window length, but a fixed width of 22 uncorrelated acoustic scanlines. Subfigures are for different spectral estimators: (a) Short-time Fourier transform with rectangular taper (REC), (b) short-time Fourier transform with Hann taper (HAN), (c) Welch's method (WEL), (d) Thomson's multitaper method (MTM). Fitting error estimates were averaged across 20 frames.