A, listening while walking easy deafness usually use “Walkman” volume as low as possible, generally should not exceed 80 decibels ~ 90 decibels, continuous listening time should not exceed 1 hour. In places like buses or streets where there is a lot of noise, it is best not to use headphones to listen to music, because in order to cover the noise, people often unconsciously increase the volume, which is more damaging to the ears. At the same time, do not listen for a long time, it is best not to exceed 1 hour each time. In addition, don’t listen to it while sleeping, otherwise the earplugs will be caught between the pillow and the ear, which will cause damage to the eardrum; if you fall asleep while listening, the damage will be more obvious when the ear is in a dormant state. Wearing headphones to listen to music or foreign languages not only does not affect others, but also can avoid outside interference, which is a kind of dashing, elegant and comfortable spiritual enjoyment. Unbeknownst to you, this can also bring some potential harm. Frequent use of “Walkman” or headphones can damage people’s normal hearing, so that people unknowingly suffer from “sensorineural deafness” disease. Medical information shows that when the human ear hears the volume up to 100 decibels, a longer period of time can cause irrecoverable hearing damage; when the volume up to 110 decibels, enough to make the human inner ear hair cells die, serious cases will also cause hearing loss disease. At present, some MP3 volume can be as high as 115 decibels, even if the volume is not open to the maximum, listening to rock music also reached 95 decibels, listening to disco music up to 110 decibels or more. And, because many headphones are in-ear design, improper use or volume is too large can cause direct damage to the eardrum. Therefore, in Europe and other places, do not use earbud type of headphones. It is recommended that the majority of young people usually use “Walkman” volume as low as possible. Generally should not exceed 80 decibels ~ 90 decibels, continuous listening time should not exceed 1 hour, if necessary, you can take a break to listen again. Currently on the market, there are roughly two types of headphones and earbuds, headphones with good listening effect, earbud headphones are easy to carry, but the damage to the ears of both types of headphones is actually the same. Listen to music with headphones, because the eardrum and headphones vibrating piece distance is very close, the sound wave conduction range is small and concentrated, the eardrum auditory nerve stimulation is relatively large, easy to cause ear inflammation, dizziness, tinnitus, heavy listening. If you listen continuously for several or even a dozen hours, sudden deafness may also occur. In addition, wearing headphones for too long, the spirit will always be in a state of tension, is also not good for health. Beware of hearing decline in the MP3 melody In this portable audio more and more prosperous today, MP3, MP4 not only make our lives more and more exciting, but also may make our hearing more and more debilitating. The ear is made up of the outer ear, middle ear and inner ear, a bit like a radio. When sound travels from the outer ear through the middle ear to the inner ear, it is amplified by a factor of 12. The cochlea is located in the inner ear, like a snail shell placed at an angle. Its labyrinth is filled with fluid, and the hair cell cilia that feel the frequency of sound oscillate with the vibration of sound waves, turning mechanical vibrations into impulses of the auditory nerve, which are transmitted to the auditory center of the brain to produce hearing. In daily life, the noise level of 70 decibels or more will interfere with the conversation, making people distracted, unfocused, affecting work efficiency, and even accidents. Long-term work or living in a noise environment of 90 decibels or more can seriously affect hearing and lead to other diseases. Many from the side of the ‘MP3 a family’, their headphones sound even next to people can hear, the noise is often more than 90 decibels. According to the American Academy of Otology survey shows that when using MP3, the eardrum accepts noise decibels, up to 115 decibels. Exposure to noise can lead to tinnitus and hearing loss, and as long as the time is not too long, once you leave the noise environment, you can soon return to normal, called auditory adaptation. If you are exposed to noise for a longer period of time, the high-decibel sound waves shock the fluid in the cochlea, which can over-stimulate the hair cells, and the hearing loss is more pronounced. Even after leaving the noisy environment, it takes several hours, or even a dozen to two dozen hours, to return to normal, called auditory fatigue. This temporary hearing loss is still within the physiological range, but may develop into noise deafness. If you continue to be exposed to noise, auditory fatigue cannot be eliminated and hearing loss continues, it will cause hair cells to die and noise hearing loss, becoming a pathological change that is difficult to reverse. People who often listen to loud music or are exposed to noise should have their hearing checked regularly. If the hearing damage is temporary, regular checkups can ensure that the damaged hearing is treated promptly. There is an easy way to test for hearing damage, the ‘before-and-after test’: before listening to an MP3, turn the volume of the MP3 down to the lowest volume you can barely hear. When listening to the songs for a period of time, if you can no longer hear the minimum volume you started listening to, it means that your hearing has been temporarily damaged. With MP3 headphones to choose a relatively balanced tone, do not overly pursue high or low frequency, do not often open the subwoofer to the maximum. Secondly, you should have a healthy sense of ear protection. Try to avoid loud, long time wearing headphones to listen to music, and to consciously restrain their behavior and habits, continuous listening time should not exceed one hour, the best break in the middle to listen again. To minimize the auditory stimulation of music such as rock and roll. When listening to music, the volume should be as low as possible, and it is important to listen to music or learn foreign languages in moderation. Since there is no cure for noise deafness, the best way is to prevent it. When hearing loss is detected, it is important to stop using headphones and go to hospital for treatment.