1981 World horrendous noise pollution events

In 1981, in the United States a modernist open-air concert, when the deafening sound of music, has played more than 300 listeners suddenly lose consciousness, unconscious, 100 ambulance arrived at the scene where he was. This is a terrible noise pollution events.

Noise research began in the 17th century, after the 1950s, the noise is acknowledged as a serious hazards of pollution. The noise pollution event also frequently reported. November 1960, Japan, Hiroshima City, a man was the noise from nearby factories have trouble was tortured, and finally the assassination of the factory. Coincidentally, July 1961, one of Japan's youth from Niigata came to Tokyo to find a job, living in the vicinity of the railway, and is frequently in the past, the noise of vans, suffering from insomnia, unbearable pain, finally committed suicide. In October of the same year, Tokyo Shinagawa, mother and son in a family of 3 people who can't stand near the building equipment factory issued noise, tried to commit suicide, attempted. China is also more serious noise pollution, there are nearly 2/3 of city dwellers in noise exceeding the living and working in the environment, on noise pollution complaints accounted for environmental pollution complaints of nearly 40 per cent.

Noise is referred to as the "invisible violence" is one of the big city. Some people have done experiments, a Guinea pig in 173 DB loud environment, a few minutes after he died. Anatomy of Guinea pigs and offal are bleeding. In 1959, the United States has 10 individual "voluntary" do noise experiments. When experimental aircraft from 10 experimenter head 10-12 meters of height flown back, six were killed, the number of hours after the death of 4. Post-mortem proved that 10 people die from noise caused by cerebral hemorrhage. Visible for this "power of acoustic weapons".

Sound into music and noise. By on a regular basis to make the material cycle vibration sound for music; by no rules, non-periodic sound vibration objects as noise. Any interference with the people to rest. Learning and working in sound as well as amplitude and frequency of the messy, intermittent or statistics on the rules of sound vibration is called noise. The noise originates from human life environment, such as industrial production, transportation, construction, and other social life, also called environmental noise. The concert given by interference of life and human health, also belongs to this class.

Noise can damage the ear, causing chronic disease, temperament lesions, in addition to this, also affects other body systems such as the nervous system. Cardiovascular, gastrointestinal system, as well as the vision and the immune system.

Noise pollution is a physical, chemical, and biological pollution different is that environmental noise pollution is characterized by the local, regional and non-residual nature. Namely: when a pollution source stopped, the pollution will immediately disappear. So the noise is the "invisible killer", as long as people in the noise, noise transmission process and the personal protective technology on appropriate control, you can make the noise away from our lives.