March 3 this year marks the 23rd National Ear Day and the 10th International Ear Day. Many young people like to wear headphones to walk and run, and sometimes wear headphones on noisy subways and buses to try to isolate themselves from the noisy environment around them. Many people know that regular use of headphones is not good for hearing, so they will choose noise-cancelling headphones or bone conduction headphones with higher prices within the range of affordability. So, can these headphones really protect our hearing? What problems do I need to pay attention to when using headphones?
Wise Investment Technology
First, the onset of noise-induced deafness is difficult to reverse, and noise-canceling headphones may also hurt hearing
The occurrence of noise deafness has a certain degree of invisibility, in the early stage is not easy to be recognized, at the same time, noise deafness belongs to the sensorineural deafness, once it occurs, it is difficult to reverse, the current lack of effective treatment for noise deafness, so it is of great significance to prevent the occurrence of noise deafness.
Noise reduction, as the name suggests, is to reduce the impact of noise on people. There are more and more opportunities for noise exposure in life, and noise exposure in both work and personal entertainment environments can lead to noisy hearing loss.
The so-called "active noise cancellation" function promoted by headphone merchants refers to the noise reduction headphones emitting a sound opposite to the noise phase, and interfering with the noise in the ear to cancel the noise. It eliminates common noise in everyday life, but does not affect warning sounds such as horns that chirp in emergencies.
Experts say that even if the noise-canceling headphones are too high, the sound output in the headphones may damage the hearing. Therefore, no matter how the "noise-canceling headphones" are, reducing the noise in the ear canal is the king of hearing protection.
Second, the bone conduction headset does not enter the ear, and it will also damage the hair cells of the inner ear
In addition, the "bone conduction headphones" that appeared as "black technology" are popular with many fitness people and outdoor enthusiasts. Bone conduction is a way of sound transmission, that is, through the human skull, auditory nerves, etc. to transmit sound waves. It does not have to cover the ears or block the ear canal to achieve the purpose of listening to the sound like traditional headphones, so it has the effect of protecting the ears. Bone conduction headphones are generally very small in size, which is more suitable for sports scenes than sports headphones.
Experts pointed out that whether it is bone conduction or air conduction, both headphones finally make the hair cells of the inner ear vibrate to cause hearing. If the volume is too loud, it will still cause damage to hair cells, which in turn will damage hearing.
Third, often wear headphones to listen to music, should follow the 60-60 principle
In addition, the quality of headphones on the market is uneven. The reporter learned that the State Administration of Market Supervision and Administration has previously carried out risk monitoring for active noise-canceling headphones, involving 60 pairs of headphones from 47 companies, as many as 30 pairs of active noise reduction is less than 10 decibels, of which some products are less than 5 decibels, accounting for more than 10%, and the noise reduction ability is seriously insufficient.
Experts suggest that people who often wear headphones to listen to music should follow the 60-60 principle, that is, the volume should not exceed 60% of the maximum volume when listening to music, and the continuous use of headphones should not exceed 60 minutes. After the appearance of transient or long-term tinnitus, you should stop wearing headphones in time, and go to a regular hospital in time to seek medical treatment, test your hearing in order to find invisible hearing loss, and pay attention to it early, detect it early, intervene early, and treat it early.
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