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give some  clear notes for the human ear?

u can take that from 9th class book of cbse in chapter sound and navigation

The ear is the organ that detects sound.

The inner workings of mammalian ears (including humans') are very similar.

Ear also plays an important part in enhancing the auditory analysis of the surrounding.

4-more notes vote up!

• We know that sounds are produced as waves in the air or any other medium.

• As these sound waves travel to our ears they convert them into electrical signals or messages that our brain can understand.

• Our ears have a special structure that allows this function.

• There are three major parts of the human ear:

Figure 5 The Human Ear

1. The outer ear (Pinna): It catches the sound waves and forwards them to the next part of the ear, that is, the middle ear.

2. The middle ear: It converts the sound waves into vibrations that then travel to the inner ear. It can do this with the help of the eardrum. The eardrum is a thin rubber-like sheet present in the Middle ear. As the sound waves reach the eardrum, it vibrates and these vibrations propagate to the inner ear.

3. The inner ear (cochlea): It receives the vibrations sent by the eardrum. It contains a liquid substance and the vibrations that enter the inner ear moves through this liquid. There are tiny hairs present inside the inner ear that turn these vibrations into signals for the brain and pass them to the brain through the hearing nerve. As the brain receives the signal it interprets the sound. However, this whole process is so quick that we cannot notice it.