PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoHow do we hear sound?
Sounds generated by the different sources reach our ear by travelling through the air.
Structure of Human ear:
The ear is the organ of the human body that enables us to hear different sounds around us. The ear can be divided into three main parts:
- Outer ear
- Middle ear
- Inner ear
Structure of human ear
Outer ear:
- This is the outermost visible part of the human ear.
- The outer ear gathers sound waves and forwards them towards the ear canal.
- At the end of the ear canal lies the eardrum. Sound waves travel through the ear canal and strike the eardrum.
Outer ear
Middle ear:
- The eardrum is made up of a membrane, which starts vibrating with the frequency of the sound wave that falls on it and, it converts the sound waves into vibrations that then travel to the inner ear.
- The eardrum is a thin rubber-like sheet present in the Middle ear.
- When the sound waves reach the eardrum, the eardrum vibrates, and these vibrations propagate to the inner ear.
Middle ear
Inner ear (Cochlea):
- Inner ear (cochlea) receives the vibrations sent by the eardrum.
- The inner ear contains a liquid-like substance through which the vibrations can travel.
- The inner ear has some tiny hairs that turn the vibrations into signals. The brain receives the signals through the hearing nerve.
- When the brain receives the signal, it interprets the sound instantaneously. However, the whole process is so quick that we cannot notice it.
Reference:
https://commons.wikimedia.org/wiki/File:Anatomy_of_the_Human_Ear.svg
https://commons.wikimedia.org/wiki/File:Blausen_0330_EarAnatomy_MiddleEar.png
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