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. Author manuscript; available in PMC: 2013 Apr 5.
Published in final edited form as: J Biomech. 2012 Jan 28;45(6):952–957. doi: 10.1016/j.jbiomech.2012.01.017

Fig. 5.

Fig. 5

Illustration of the entire membrane displacement obtained with a laser doppler vibrometer from 0 to 300 Hz associated to the frequency response spectrum. The round pneumatic driver showed the same vibration mode for the membrane only between 60 Hz and 100 Hz.