FIG. 5.
Distribution of frequency offsets for the three different subjects. The mean and standard deviation of subject A (a) is −19.9 Hz (SD= 68.7), subject B (b) is 16. 9 Hz (SD= 46.5), and subject C (c) is 13.5 Hz (SD= 42.8), respectively. Note that another peak besides the main peak in Fig. 5a, results in the large frequency offset in subject A.