Many young people now have problems with hearing. In fact, most of these situations arise because of the long-term wear of headphones because when we crowd bus, go to work, and exercise outdoors, plugging in a pair of headphones is indeed a wonderful thing. , but often overlook a problem - high-frequency segment hearing loss.
Wearing headphones, hearing more than 90 decibels
Whether it is for a clearer speech or enjoying a purer music world, the fact that the earphone damages hearing cannot be changed. Professor Tian Guangyong, director of Otolaryngology at the Third Affiliated Hospital of Southern Medical University, said that listening to high-decibel sound for a long time will first cause hearing fatigue. If you hear louder sounds, listening to bass will sometimes not be heard. And more than 90 decibels, whether noise or music, will make people feel uncomfortable.
According to experts, the level of the voice is expressed in decibels. When the patient hears inaudible voices, you must raise your voice to speak to them and even shout loudly near his ear. In theory, 0 dB is the lower limit of hearing for people; more than 50 dB will affect sleep and rest; if you live in a noise environment of more than 90 decibels for a long time, it will seriously affect the symptoms of neurasthenia, headache, and high blood pressure caused by hearing diseases. It is worth noting that sudden exposure to a noise environment of up to 150 decibels can result in acute trauma to the auditory organs, resulting in ruptured tympanic membranes and complete loss of hearing in both ears.
"Now many young people like to listen to music with headphones. Listening for a long time may cause hearing loss." Tian Guangyong said that listening to high-decibel sound with headphones would be affected. According to the guidelines of the UK Department of Health and Safety, acoustics of more than 105 decibels can permanently impair hearing, but the maximum volume of many MP3 players on the market is as high as 120 decibels, and the maximum output volume of headphones has surpassed the upper limit. In addition, listening to headphones for a long time can easily cause damage to the hair cells of the inner ear, and can even cause irreversible hearing damage.
Tian Guangyong suggested that listening to music with headphones, the best half-hour break; the volume is recommended to control at 60% of the maximum volume; and headphones best choice for high-quality products.
How do you know that hearing has gone wrong?
If you wear headphones for a long time, how do you know if your hearing is damaged? Tian Guangyong introduced that there are two indicators for diagnosing whether a person's hearing is problematic. In addition to the above-mentioned decibel damage situation, it also depends on the situation of frequency damage.
What does "frequency of damage" mean? Frequency refers to the frequency of sound waves, and the frequency of sound emitted by different objects is not the same. With the aging of hearing organs, age growth, environmental factors, and mental stress, people's hearing will begin to decline, and some frequency bands will not be heard.
Tian Guangyong said: “After people are old, the high-frequency drop is more obvious. When the ears receive high-frequency sounds, the sensitivity is lower than that of normal people, that is, they are insensitive to sharp and crisp sounds and have little effect on ordinary language communication. The car horn sound will not be sensitive, but now in the market, there are many headphones advertised the pursuit of strong high frequency and low frequency, some manufacturers in order to meet consumer preferences, launched the so-called 'special bass' headset, with convex The type of film is aimed at the ear hole, claiming to increase the bass effect. Using these headphones will undoubtedly cause more serious damage to the ears."
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