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Figure 3: Median, 25th and 75th percentiles, and minimum and maximum values for JFC thresholds (dBA). The two boxplots in the lower left show the JFC thresholds for the unmasked condition (the start and end of the trial). Data for masking with unsynchronized and synchronized footstep sounds at 40 dBA, 50 dBA, 60 dBA, and 70 dBA are presented in the grey and white boxplots (O and * represent outliers)

Figure 3: Median, 25th and 75th percentiles, and minimum and maximum values for JFC thresholds (dBA). The two boxplots in the lower left show the JFC thresholds for the unmasked condition (the start and end of the trial). Data for masking with unsynchronized and synchronized footstep sounds at 40 dBA, 50 dBA, 60 dBA, and 70 dBA are presented in the grey and white boxplots (O and * represent outliers)