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Tympanometry: Methodology, Interpretation and Clinical Application

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dB<br />

SPL<br />

33dB<br />

120<br />

100<br />

80<br />

60<br />

40<br />

20<br />

0<br />

Middle Ear Adds 33dB to Incoming Sound<br />

It has to, Because the Cochlea is Filled with Fluid!<br />

0 10 100 1000 10,000 100,000 1,000,000<br />

44:1<br />

Pressure increase

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