Ear: 3 Components, Structure & Functions - Analyzing Sound Waves YouTube Lecture Handouts for NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.
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Ear: 3 Components, Structure & Functions - Analyzing Sound Waves
Ear Structure & Functions
Ear is the organ of hearing and, in mammals, balance.
The earΥs 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
Functions:
- Mechanism of Hearing
- Providing balance
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 ) .
- Transmit sound to fluid of cochlea through oval window.
- Cochlea transduces sound waves into action potentials.
β Manishika