Keyboarding noise most likely to hurt the ear

GermanyDoctorsRobert Koch had predicted: "Sooner or later one day, in order to survive, mankind will have to struggle with the noise, like dealing withCholeraAnd the plague that. "From" New Scientist, "the report sounded the alarm again. The report pointed out that noise pollution has long been directly or indirectly harm people's health. Audiology at University College London, said Professor Deepak and even premature death also to noise.


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Latest statistics show that 2% of Europeans having nightmares because of noise pollution and sustained, at least 15% of people said they worry the noise unbearable. Therefore, the Chinese Center for Disease Control Environmental Health and Related Product Safety Director Jinyin Long pointed out that the noise will affect the nervous system, resulting inSleep lossTrance, also may cause high blood pressure, decreased immunity, and hearing loss.



"European night noise guidelines" put forth a noise exposure limit, such as cardiovascular disease limits long-term acceptance in the night 50 dB noise; negative impact on children's learning is 55 dB; general disturbance, only 35 decibels. And if long-term exposure to sounds above 90 decibels may cause some degree of hearing loss. According to reports, 55 decibels is roughly equivalent to the noise of busy restaurant, while 75 decibels is equivalent to the bustling corner of noise.



In addition, experts also point out that a lot of life and easy to overlook the noise source.



Electric cars or car brakes. This noise generally will be more than 90 decibels, so it is best not to slam the brakes.




Elevators and other low frequency noise emitted. The frequencies below 500 Hz sound, such as elevators, water pumps, boiler noise. It can reach the ear bone, may lead to sympathetic nervous, cause tachycardia, blood pressure and so on.



Open office keyboarding, telephone sound. Environmental Analysis at Cornell University professor Gary Evans said that in the open office, even as the talk of the keyboard, phone ring so the noise will be slightly negative impact on health.



Neighbor, noisy neighbors. Office for National Statistics figures show that over the past 20 years, residents of noise complaints turned over 5 times the amount.



To reduce noise pollution, countries have introduced some measures. When renting an apartment in Switzerland, after 10 pm are not allowed to take a shower; the provisions of New York or even domesticated dogs at night can only call for 5 minutes, 10 minutes can only be called during the day. In addition, the experts pointed out that once the tinnitus, earache, the phone unconsciously tend to use the side of the ears, and other issues often heard when people talk is not clear in respect of attention and timely examination and treatment.