The outer ear is the external portion of the ear, which consists of the pinna 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 3 kHz. 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.
Read more about Outer Ear: Pinna, or Auricle, Ear Canal, or External Auditory Meatus
Famous quotes containing the words outer and/or ear:
“Gillian Taylor: You’re from outer space?
James T. Kirk: No, I’m from Iowa; I work in outer space.”
—Harve Bennett (b. 1930)
“Anyone who tries to keep track of what is happening in China is going to end up by wearing all the skin of his left ear from twirling around on it.”
—Robert Benchley (1889–1945)