The human ear canal is, on average, 2.5cm2.5cm long and aids in hearing by acting like a resonant cavity that is closed on one end and open on the other. The length of the ear canal is partially responsible for our sensitivities to certain frequencies. Use 340m/s for the speed of sound when performing the following calculations.
Required:
a. What is the first resonant frequency?
b. What is the wavelength at second resonance?
c. How does the first resonant frequency change if the ear canal is full of water?
Answers: 3
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