There is a sound that adults cannot hear at all, is it true?
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There is a sound that adults cannot hear at all. Is it true?
As we age, our sensitivity to high-frequency sounds gradually decreases, while our sensitivity to low-frequency sounds remains relatively stable. Therefore, children can hear some high-frequency sounds that adults cannot hear, such as sounds at 14,400 Hz.
So some people’s hearing loss is due to bad ears, such as some kind of ear disease; some people’s hearing and speech functions are damaged , but it is the result of injury to relevant areas of the brain. In addition, hearing also has its own development characteristics, especially auditory sensitivity is closely related to our age.
For example, before the age of 20, our sensitivity will gradually increase with age; after the age of 60, the older we get, the worse our auditory sensitivity will be, and this decline in hearing ability starts from the "high frequency" Sound" begins. "There was news before that some students used a 'mosquito cell phone ringtone' that even the teachers could not hear. In fact, it is because this ringtone is a high-frequency sound of 17,000 Hz, and the older adults are, the less likely they are to hear it. It is easy to hear this sound.
As we age, the body’s metabolism will gradually decline. From this point of view, hearing aging is inevitable. However, many scientific studies have shown that , genetic factors, long-term exposure to noise, excessive tobacco and alcohol, poor eating habits and living habits, high blood pressure, hyperlipidemia, diabetes and other factors are all causes of presbycusis.
In short, children can hear sounds that adults cannot hear, not because they have any superpowers, but because their inner ear hair cells have not been damaged too much.