Protect your ears, starting with denying headphones
With the development of China's economy and society, the noise from various sources has gradually increased, becoming an invisible killer that damages people's hearing. More seriously, the hazards of the vast majority of ordinary people have not received enough attention, and people who are enchanted by high-volume headphones are everywhere.
1. Why is it not good to wear headphones for a long time?
According to the World Health Organization, about 1.1 billion young people (12 to 35 years old) in the world face the risk of hearing loss due to the habit of listening to music for long periods of time. In China, relevant institutions have conducted a questionnaire survey of 3,826 college students in a university. The results showed that the earphone usage rate was 99.8%. Among the students surveyed, more than 1,000 people had noise-induced hearing impairment. The proportion is close to 30%. Experts said that many people often wear headphones to listen to music. In the noisy environment such as buses, subways, and noisy streets, the voice is greatly adjusted; others I like to listen to music with headphones before going to bed, and fall asleep without knowing it. It is like placing a strong sound source in the ear for a long time, stimulating the inner ear's auditory organs.
2. The hearing loss caused by wearing headphones for a long time is often difficult to detect.
In general, the frequency that human ears can hear ranges from 20 Hz to 20,000 Hz, and frequencies above 4000 Hz are called high frequencies. People communicate with each other normally, as long as the auditory function of the cochlear from 500Hz to 3000Hz is normal, so when high-frequency hearing is damaged, people are often completely unaware. The frequency of hearing loss caused by high-pitched headphones is precisely at high frequencies. Once the high-frequency hearing drops, it will slowly expand to the low frequency. If the high-frequency level hearing loss does not attract people's attention, and the noise pollution still exists, the horizontal hearing of other frequency bands will also have problems, which will affect people's normalness. Language Exchange.
3. How to choose headphones?
Headphones are usually divided into three types: head-mounted, ear-hook and in-ear. The least damage to the ear is head-mounted. Because the earbuds are directly plugged into the external auditory canal, the sound is completely received by the tympanic membrane, which is very harmful to the hearing. Headphones have minimal damage to the ear canal and eardrum because they do not need to be worn when they are worn.
4. How long is it suitable to wear headphones?
Listening to music with headphones or learning a foreign language should pay attention to reduce the volume, it is best to control 40 to 60 decibels (general conversation sound or slightly smaller), to feel comfortable and pleasant, not to listen for a long time. Professor Wang Bin suggested that adults should not use headphones for more than one hour a day, and it is appropriate to listen intermittently. It is best to let the ears rest for a while every half an hour. Should pay attention to keep the earplugs clean, clean each time after use; in the bus, subway, noisy street and other noisy environment, it is best not to wear headphones to listen to music, call, ride.
5. Can I wear headphones to listen to music before going to bed?
Many people have the habit of wearing headphones to listen to music before going to bed. In fact, this is a very bad habit. Sleeping with headphones, listening to music, falling asleep unconsciously, and even forgetting to turn off all night, so that strong or lighter but persistent sounds stimulate the inner ear for a long time, which may lead to cochlear dysfunction, which eventually leads to Noise deafness.
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