Fig. 8.

Camera images (upper image) and B-scans (underneath) of the vibrating vocal folds during phonation: (a) Video 1, the vibrating vocal fold of female test person which oscillates with a frequency of 286 Hz and an amplitude of $600\mu \mathrm{m}$ at the glottis, decreasing to the outer parts; and (b) Video 2, an example of the vibrating vocal cord of a male test person with lower frequency of 143 Hz and a higher amplitude of $1600\mu \mathrm{m}$. (Video 1, MPEG, 3.1 MB [DOI: http://dx.doi.org/10.1117/1.JMI.2.2.026003.1]; Video 2, MPEG, 18.4 MB) [DOI: http://dx.doi.org/10.1117/1.JMI.2.2.026003.2].