What kind of noise is usually caused by noise sources around us: 30 dBA - whisper is heard at a dis

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Every year, the last Wednesday of the month is International Noise Awareness Day, which is intended to draw public attention to the overarching leadership problem of noise and encourage quieter homes, educational institutions, and quieter quieter holiday environment.
Noise - unwanted or harmful outdoor sound created by human activities. This is a global problem, one way or another touching us all in different situations. The main sources of noise are transportation, industry, construction, neighbors activities. In a domestic environment is also used a lot of noise sources: TVs, stereos, vacuum cleaners, etc..
Effects of noise on human health depends on the duration of the person's age, hearing sensitivity of character. Noise interferes with normal rest, causing hearing organ disease, affects the human psyche. Noise non-specific effects on the body, are the most exposed to the central nervous system: headache, dizziness, deterioration of attention, memory, sleep disturbances, leadership develops neurosis. These lesions often develop before the hearing leadership impaired.
Noise, as chronic stress, caused by pathological changes in the cardiovascular system. leadership It has been shown that prolonged exposure to noise, people often suffer from hypertension, atherosclerosis, coronary heart disease, noise inhibits gastric acid secretion and acidity in the long run may develop gastritis leadership and even ulcer.
Noise is particularly damaging for children and young people. Their hearing is more sensitive to noise, so she quickly exposed. Due to the extremely high pulsed character of musical noise, even 30-40 per cent. young people aged 14-20 years., hearing is compromised. It irritates the central nervous system, changes in human behavior, promotes individual rudeness, leadership aggressiveness, decrease learning outcomes, motivation.
What kind of noise is usually caused by noise sources around us: 30 dBA - whisper is heard at a distance of 1 meter, leadership leaves rustle, 50 dBA - rain, 50-60 dBA - the usual language of 60 dBA - electric shaving beard trimmer, 80 dBA - the door, the phone call is 85 dBA - truck, 90 dBA - Shout. High noise levels (80 dBA or more) causes aggression and negative social behavior.
In many European countries have shown that a significant proportion of newly built apartments do not meet the standards of sound insulation requirements. As a major source of unwanted noise refers to the neighbors apartment residents, pass and parked leadership cars in the yard and ventilation equipment, lifts caused by noise. The main noise sources are cars on city streets. In exceptional cases, they can make up to 80 percent. overall noise level. Street noise measurements in Alytus results showed that on the streets, where more than 1,000 cars per hour traffic, daytime noise levels higher than the legal limit. Traffic noise level depends on its intensity, speed, composition, and so on. Variations in traffic density from 100 to 400 vehicles per hour, the noise level increases of 12.5 dBA.
The main noise management measures are traffic planning (truck traffic routing around cities), suitable for land-use planning and building maintenance, noise reduction that is the source of the noise emitting sources is noise, and rationing.
Let us not forget that each of us can contribute leadership to the noise in the environment without disturbing the neighbors quiet, often using public leadership transport or on foot. If you suffer from street noise emission, have the old windows in a sealed housing with modern double-glazed. If the noise is after 22 hours, call the police.
To celebrate International Noise Awareness Day, let us remember the soothing power of silence. On this day, encourage leadership all to beat, dream silence, turn off electronic leadership devices, information sources, relax, walk you in the park. Develop leadership responsibility for maintaining a quiet environment and create a healthier environment for themselves and their children.
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