Fig. 10.
Vibrometry measurements of amplitude (A) and phase (B) transmission gain through the head. For both A and B, three ipsilateral and three contralateral trials (10 averages/trial) were averaged, giving a sum of 30 ipsilateral and 30 contralateral averages used for the ratio calculation. (A) The moving 10-point average (black line) is higher than the amplitude gain measured using a probe microphone adjacent to the ipsilateral ear (red). (B) Phase gain measurements are shown for relevant frequencies and can be fitted to a line with slope of −0.001 (R2=0.82).