What role does the human ear play?

The human ear is composed of outer ear, middle ear, and inner ear.The external ear includes the auricle and the external auditory meatus.The function of the auricle and the external auditory meatus is to collect sound waves.The middle ear includes the tympanic membrane, tympanum, and Eustachian tube.It has the functions of pressurization, energy conversion and protection.

The outer edge of the ear, called the pinna, is mainly used to collect sound.Ricketts called it a bit like a trumpet.However, the speaker points slightly forward, so that the sound collected by the ears comes from the opposite side rather than from behind.He said that sounds coming from behind are like shadows to some extent. Due to the shape of human ears, the effect of their transmission into our ears is not so good.

Alfred Newman (a typical cover figure of the American humor magazine MAD)’s iconic large pinna can help shield the noisy sound behind a person, allowing him to better listen to the voice of the opposite person.Those with relatively flat ears can imagine that they can better capture the sound after they arrive.Ricketts said that people with such ears can claim that their ears have an advantage in listening to their surroundings.However, no matter what the shape of your ears, if you want to hear more clearly when you are talking face-to-face, you only need to place your ears with your hands to focus more on oncoming sounds.

The distance between our two ears can help people locate the sound source.The bumps or grooves in most of our ears can change the frequency of the sound and help us better locate the source of the sound.Ricketts said that no matter whether your ears are completely curled or convex and concave, the sound each of us actually hears is different from the sound heard by others.

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