From the point of view of physics, noise is an irregular and disorderly combination of different frequencies and intensities. From the physiological point of view, all the irritating, annoying and unnecessary sounds of poets are called noise. Noise pollution has become an important public hazard in the world, which attracts more and more attention. And the noise is very harmful to human hearing, have you noticed?
Every new year’s day, fireworks and firecrackers are always needed to boost the fun
But did you know that the maximum output of “Walkman” can reach 105-120 decibels, the noise intensity in the cinema can reach 120 decibels, and the sound of firecrackers can reach 140 decibels. If people touch the noise with 110 decibels for more than 1 minute and 30 seconds or touch 140 decibels in an instant, the hearing damage will occur immediately. Professor Bu Xingkuan, a famous audiologist and audiologist in China, chairman of who Cooperative Center for prevention of deafness and hearing loss, and chief physician of Otolaryngology Department of Jiangsu People’s Hospital, appealed to the general public to protect hearing and use ears healthily.
Electronic noise hazards are on the rise
Have you noticed the explosion of electronic noise hazards? In recent years, the number of deafness caused by environmental noise pollution has gradually increased. According to who statistics, noise ranks second only to aging in all the causes of deafness, accounting for 37%. From the physiological point of view, all the voices that disturb people’s rest, study and work, that is, unwanted voices, are collectively referred to as noise. Common noises include the following: industrial noise, such as the mechanical noise caused by the rotation and vibration of machines in industrial production; traffic noise, whistle sound, train running noise, etc.; social life noise, dance hall, disco musical instrument playing sound, household washing machine air conditioning noise, etc.
China is in the rapid development period of modernization, industrialization and urbanization. Large-scale urban and rural construction makes industrial noise, construction noise, traffic noise and social life noise surge. In addition to these, the popularity of personal electronic audio products has also increased noise pollution. The maximum output of the Walkman can reach 105-120 decibels, and the noise intensity in the cinema can reach 120 decibels. While the citizens enjoy the fashionable life, they may have damaged their hearing.
Noise damage is systemic
Noise is a kind of noise that causes people to be upset or the volume is too strong and endangers human health. If we do not take protective measures in the strong noise environment, it will not only lead to permanent hearing loss, but also have a serious impact on the whole system. Noise damage and its degree depend on noise intensity and exposure time. Continuous exposure to noise above 85 decibels will cause hearing loss, high blood pressure, insomnia, digestive disorders and other diseases, and also harm students’ learning and behavior. If the noise of 110 decibels is more than 1 minute and 30 seconds or 140 decibels is momentarily exposed, the hearing loss will occur immediately.
“Walkman” should be used in quiet environment
In daily life, it is very important to reduce the harm of electronic noise to protect hearing. In daily life, we should pay attention to reducing the volume of radio, television and other audio equipment, try not to honk the car horn, not to make noise, try not to participate in noisy sports and listen to rock music. “Walkman” should be used in a quiet environment. Try not to use it in noisy places such as subway and public places. Don’t turn up the volume to pursue stimulation or try to cover up the noise around and sacrifice your hearing. Experience shows that if you can’t hear someone talking with your walkman, it means that the volume is too loud, you should turn it down in time, and don’t listen too long.
If there is tinnitus immediately after noise exposure or there is still a feeling of being covered in the ear, or if you can hear the speech but don’t know the meaning, you must be alert to noise damage and go to the hospital in time.
Therefore, we need to pay attention to prevent noise damage in our daily life. If the noise can not meet the requirements from the sound source or transmission way, further acoustic technical measures such as noise reduction, sound insulation, sound absorption and shock absorption can be taken. Baibai safety net’s knowledge about children’s home electric shock prevention is still being updated. Please lock in our relevant columns!