Contact strong voice can bring the damage which will happend in the cochlea in the inner ear at the cochlear spiral, snail shell-like.
Sound vibrations forward conduction, spread through the tympanic membrane ossicles, terminal is filled with fluid of the cochlea. Cochlea hair cells will be very small sound vibrations into electrical signals microvolt level, which signals through the auditory nerve into the brain, the brain to perceive the sound, great noise exposure to the hair cells will be wrapped, twisted or broken, can not be normal sound vibrations entering the ear canal to respond. Even the relatively small number of hair cell loss can lead to ear hearing loss. Although there have been studies on hair cell regeneration, but the hair cell loss and consequent hearing loss seems to be permanent.
Here's some basic facts may be more interesting, the human ear is a complex "electrical - mechanical - hydraulic" organ, the frequency response of about 20Hz to 20000Hz or so. (Paragraph overtones of musical instruments is also within this range.) For some reason, women because of hearing loss caused by age, only about half that of men.
Here's some basic facts may be more interesting, the human ear is a complex "electrical - mechanical - hydraulic" organ, the frequency response of about 20Hz to 20000Hz or so. (Paragraph overtones of musical instruments is also within this range.) For some reason, women because of hearing loss caused by age, only about half that of men.
When the ears of the MF and HF is weakened accordingly, the voice of the many definitions sound defining sounds difficult to hear, nature will not be able to understand. Many voice pitch higher (than the reasons and soft), such as "S" "SH" "F" for a class may not be told no sound, and other similar "P" "T" may be easily confused. Many elderly people feel that hearing loss in their own had this situation before. In other words, when compared to the young, the need for greater volume of the ear can hear.
There is a saying: age and the impact of external noise, the two are inevitable, but the so-called "civilized society" in the continuing exposure to high-volume effects caused by the accumulation of this provides evidence to the contrary. Individual isolated culture, such as Sudan or horse-like tribal inhabitants of Easter Island, are not in contact with the voice of civil society pressure, tests show hearing sensitivity until they are old or young level.
There is a saying: age and the impact of external noise, the two are inevitable, but the so-called "civilized society" in the continuing exposure to high-volume effects caused by the accumulation of this provides evidence to the contrary. Individual isolated culture, such as Sudan or horse-like tribal inhabitants of Easter Island, are not in contact with the voice of civil society pressure, tests show hearing sensitivity until they are old or young level.
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