Figure 3.

The band sound pressure spectrum level L_pbs (top panel) and band sound absorbed-power spectrum level L_wbs (middle panel) are plotted as 10th, 25th, 50th, 75th, and 90th percentiles based on 40 adult ears with normal function. The conductance level L_G, which is equal to the difference of L_wbs and L_pbs is plotted in the bottom panel as 10th, 25th, 50th, 75th, and 90th percentiles for the same data set. The values on the median L_G curve at octave frequencies between 0.5 and 8 kHz are identified with circle markers.