Ear1 - Ear This note covers the anatomy of the ear. The...

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Ear This note covers the anatomy of the ear. The external ear Dividing up the Ear The Ear is made up of three distinct regions: The External Ear The Middle Ear The Inner Ear The external ear is located on the lateral surface of the temporal bone and enters the skull at the external auditory meatus. The External Ear The external ear is based on a cartilagenous skeleton, which consists of the pinna, concha and external auditory meatus. It gathers sound energy and focuses it on the eardrum (tympanic membrane). One consequence of the configuration of the external ear is to selectively boost the sound pressure 30- to 100- fold for frequencies around 3000 Hz. This amplification makes humans most sensitive to frequencies in this range - and also explains why they are particularly prone to acoustical injury and hearing loss near this frequency. Most human speech sounds are also distributed in the bandwidth around 3 kHz. The pinna and the concha are the visible parts of the ear that resides outside of the head. The purpose of
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Ear1 - Ear This note covers the anatomy of the ear. The...

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