It is said that flat-ear headphones are bad for the ears. What about in-ear headphones? I wear in-ear headphones, and I can't hear the sound inside and outside the car after wearing them.

1. First, let's talk about the function of the human ear. The human ear has two functions: hearing and balance. Only the former is discussed here. The transmission of sound from the vocal body to the auditory pathway of the brain is a complex process. Here are only some things related to music.

2, listening to the scene, boxes, headphones, the reason why they feel different, first, because the sound source and environment and their own quality are different, but also related to the structure of the human ear, there are two ways for sound conduction to the cerebral cortex: air conduction, bone conduction. Under normal circumstances, the first one is the main one, but the latter one is fast, which also leads us to listen now.

One aspect of the field is different from listening to headphones.

3. Let's talk about sound again. The frequency of sound determines the pitch. The unit is hertz. The range that the human ear can hear is between 20 Hz and 20000Hz. However, the frequency response of some headphones is far beyond this range, which is actually inaudible to human ears, but this does not deny the quality of these headphones.

4. People's ears have different feelings about 20-20000 Hz, and are most sensitive to 500-3000 Hz. This is precisely the frequency range of human language, so the human ear feels better about human voice than high and low frequency instruments.

5. In addition, from a medical point of view, the sound with a sound exceeding 90 decibels will cause damage to the ears, and the damage of the sound to the ears is directly proportional to the time and intensity of the noise. High frequency sound is harmful.

6. However, it is worth noting that intermittent sound will do more harm than continuous sound, which shows that most people are usually wrong.

7. Earplugs and earphones are different in feeling, on the one hand, because of the grade and quality of earphones, on the other hand, because of the structure of ears, because a large part of people's ears listen to sounds because of the * * * sound of external auditory canal. When the wavelength of sound is four times the length of ear canal, the sound is the best.

8. From the above item, we can know that the large earphones with hanging ears and cover ears are superior to earplugs in sound, which is also a good aspect of the sound of large earphones and earplugs, but of course it is not the main aspect.

9, but there is one difference, that is

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Series earplugs, different from ordinary earplugs in structure, have certain advantages in bone conduction and different pronunciation structures, so they are much better.

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Finally, give headphones players a piece of advice, and be sure to pay attention to protecting your hearing! If you suddenly find yourself less sensitive to high frequencies than before, be sure to pay attention! ! Because the hearing loss of human ears begins with the attenuation of high frequency, and then gradually becomes completely deaf, which is a very dangerous signal. 1 1

For the majority of headset players, if you want to have a healthy ear, if you really find that your hearing is weakened, there are several ways: First,

Stop listening to music and take vitamin B.

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Serious can be considered.

Hearing AIDS can only be worn when low molecular dextran injection, compound salvia miltiorrhiza or hyperbaric oxygen chamber are ineffective.

Add some

Generally speaking, earplugs are more harmful to ears than headphones, because their sound transmission is much shorter than that of bones, and because the external auditory canal is only 2.5-3.5 cm, it is more likely to cause ear canal ringing than large headphones. In addition, we can measure our listening range in a very simple way:

Turn the volume of the earphone to the maximum that our ears can bear, and then turn it on two squares.

The volume at this time can basically damage our ears. (Of course, the second method is not recommended)

Also, when noise deafness occurs, the most serious damage is the 4000 Hz valley notch and high frequency attenuation of "pure tone audiometry", which is the "male and female tenors" part of music.

The external auditory canal of human ear is composed of bone and cartilage, and cartilage accounts for one third, while hair follicles, sebaceous glands and cerumen glands are all distributed in cartilage. That is to say, when cleaning the ear canal, the deeper the better. The eardrum of human ear grows obliquely downward, so be careful not to raise it excessively when pulling out the ear, so as not to damage it.

Of course, it is not recommended to lend earplugs to others often to prevent diseases. Big headphones basically do not have this problem.