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Noise pollution in cities is one of the important environmental issues which causes harmful effects such as hearing loss, sleep disorder, hypertension and gastrointestinal complaints in people of cities. To prevent these effects and access to recommended standards, measuring noise pollution in cities is necessary. This study aims to identify amount of noise pollution in geographical arena of Khalkhal Town. Using sound maps, in 22 stations with regular 500 m distances in systematic randomfatcat:hfxtey64mvealjaqhny5rt5a64