In the normal hearing pathway, sound waves have to pass from air to liquid as sound is transmitted from the external ear to the inner ear. This occurs as a result of

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The normal hearing pathway involves the transmission of sound from air to liquid in the inner ear. This process is facilitated by several mechanisms: the increase in pressure on the oval window relative to the tympanic membrane, the increase in force applied to the oval window through the lever action of the inner ear ossicles, and the difference in surface areas between the tympanic membrane and the oval window membrane. All these factors work together to efficiently transmit sound waves into the fluid-filled cochlea of the inner ear.

In the Normal Hearing Pathway, Sound Waves Have to Pass