Volkswagen reporter Liu Yuandi Linyi report
Since 2003, it is officially identified as “World Noise Day” on April 16th each year. It is hoped that through the publicity of related knowledge such as noise pollution, more and more people can understand this “invisible killer”.What is noise?What are the hazards to the human body?How to prevent noise hazards?Let’s take a look today!
Noise refers to a type of sound that causes irritability, or strong volume and harm to human health.From the perspective of environmental protection, those who prevent people from studying, working and resting normally are noise on some occasions.For example, loud conversation in the library, the sound of machinery of construction construction.
The commonly used units for noise are decibels, and 30-40 decibels are relatively quiet and normal environments.According to the standards of my country’s national standards, the noise in the residential area must not be higher than 55 decibels, and at night must not be higher than 45 decibels at night.
Noise is very harmful to human health, specifically: 1. Damage to hearing.Continuously exposed to high sound noise, which can easily lead to damage and hearing decreased in the noise, and the noise of higher decibels can cause temporary or permanent deafness.2. Affect sleep.Noise is easy to make people upset, leading to decline in sleep quality, which affects normal learning, work and life.3. Affect the cardiovascular system.Noise is one of the causes of heart disease.4. Affect emotions.Long -term in the noise environment will cause people to have bad emotions, and it is prone to tension, depression, fatigue, and anger, affecting daily life.5. Affects appetite.Noise can cause diseases in the digestive system, leading to gastrointestinal dysfunction, and symptoms such as loss of appetite, nausea, weight loss, and physical decline.
How to prevent noise hazards?In life, keep as much as possible with the noise source. For example, do not be too close to the TV when watching TV, and keep the music properly when playing music with audio.When working with noise, wearing effective protective supplies, such as anti -noise earmuffs and earplugs.Wear headphones to master the principle of “60-60-60”, that is, do not use the headset for more than 60 minutes, and the volume of the headset should not exceed 60%of the maximum volume. When the environmental noise exceeds 60 decibels, do not use the headset anymore.If you are in the noise environment for a long time, you should rest as soon as possible after the end, so that your ears can be fully relaxed to reduce the damage caused by noise.Living near the road, you can reduce noise by installing sound -proof windows and thick curtains in the room.Put more green plants on the window sill can also “reduce noise.”In addition, a healthy lifestyle, necessary exercise, balanced and healthy diet, and effectively ensure the vitamins required for replenishment of hearing are good for hearing.
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