The cause of the sound pollutionLouder than necessary until causing the deterioration of his health come from a variety of sources, including the important (Siri prote. The result: 222-223 2534 (1991) sindhu.)1. transport The motorcycle is used. Tricycle engine, truck, and plane and more make the sound level increases as well, may be classified as follows.Motorcycle. Tricycle (tu ") sound level: 35 DB.Car audio levels 60-25 DBTruck volume 95-120 DBThe train ran away 100 ft 60-decibel sound level.Air volume: 100-140 DBOffice of the Board of Directors of the national environment, configure the volume of residential district in the daytime and at night it does not exceed 60 DB and 12 DB, respectively. For the volume of traffic over the announcement by Britain caused the engine or any part of the car, motorcycles, typically no more than 95 DB. When measuring the sound level with sound in the distance, 7.5 meters.2. industrial is originating from the operation of the machines of sizes that make it. Occurs, the volume varies from 60 DB up to 120 DB, but the size of the labour machine. The material used to cap or ceiling plant as well as the environment of the plant.3. from households is sound caused by tools, home appliances, such as vacuum lawn mower. Scrubber driers radio and tv cause a volume approximately 60-70 DB.4. noise resulting from other causes, such as lightning and Thunder audio ad quarrel any.The impact of sound pollutionThe definition of the World Health Organization For a safe level of sound is not exceeding 85 DB. 8 hours per day, when a touch of danger caused by pollution of the sound. If several hours per day to touch a few times it will cause harm is enough to recognize this.1. the effect on the mind.-Causing the symptoms, irritation, nuisance, ensuring. Nervous tension-Cause emotional changes.-Causing a frantic damage concentration Klum2. the effect on the body.-Make the heart beat rate of respiration strength change.-Cause more than the usual acid stomach wound and disease stomach diseases. The food.-Causes high blood pressure-Make muscles spasm symptoms occurring a long gasp for breath and lost.-Cause insomnia-Make the nerve degeneration can cause ear deaf Deaf hearing.3. impact on work performance of work reduced to working late, sometimes an error occurs or the task can cause accidents.4. the impact of communication noise can interfere with normal communication to the. Reception and receiving commands may cause accidents.5. damage to the object. Sounds like the sound levels from aircraft type faster than sound causes vibration sometimes, the pressure to make the air pressure to rise between 1-10 pounds per foot, making the object table, or certain types of construction such as walls. Wall and roof window, window, mirror shake is destroyed.
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