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. Author manuscript; available in PMC: 2009 Jun 22.
Published in final edited form as: Sens Actuators A Phys. 2007 Jul 20;138(1):179–186. doi: 10.1016/j.sna.2007.04.052

Figure 2.

Figure 2

The resonant mode-shapes of a circular diaphragm: (a) The first three resonant mode-shapes calculated using Eqs. (1)–(2); (b) circulations at the second resonant frequency, 15 kHz; (c) circulations at the third resonant frequency, 39 kHz; and (d) an additional third resonant frequency, 45 kHz due to non-linear mechanical behavior.