Ear: 3 Components, Structure & Functions-Analyzing Sound Waves YouTube Lecture Handouts
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Ear Structure & Functions
Ear is the organ of hearing and, in mammals, balance.
The ear's function is to transmit and transduce sound to the brain through the parts of the ear: the outer ear, the middle ear and the inner ear
Each ear consists of three portions:
(i) External ear
(ii) Middle ear
(iii) Internal ear
Mechanism of Hearing
Sound Wave Particle Displacement
Sound waves are longitudinal waves.
motion of air molecules associated with sound.
Longitudinal Waves and Transverse Waves
Longitudinal wave: Wave in which particles of the medium move in a direction parallel to the direction that the wave moves.
Transverse waves: Always characterized by particle motion being perpendicular to wave movement.
Difference between Loudness, Pitch and Quality or Timbre
Process of Hearing Sound
Sound waves at different pressures vibrant eardrum.
Middle ear bones are set in motion.
Bones amplify (about 20x).
Transmit sound to fluid of cochlea through oval window.
Cochlea transduces sound waves into action potentials.