Figure 3.

F₀ tracking performance on noisy recordings. (a) Spectrograms of six exemplar motifs. Numbers in each panel indicate signal-to-noise ratio (dB RMS). Red traces indicate F₀ estimates without masking; blue traces indicate estimates after masking. In the final panel, the signal is barely visible and the F₀ estimate is extremely noisy. Dynamic range of the spectrograms is 50 dB, and the time and frequency scales are the same for all plots. Arrowheads indicate reverberation. (b) Boxplot of average error (RMS difference between masked and unmasked F₀ estimates) as a function of recording SNR. Thick horizontal lines indicate medians. The upper and lower edges of the boxes indicate upper and lower quartiles, and the vertical lines extend to 1.5 times the interquartile range. Outliers beyond the range of the whiskers are shown as points.