![]() of India (MoEF), but there is paucity of literature on noise pollution mapping in major cities, including Puducherry. Several studies performed in Indian cities found higher sound level than the standards prescribed by Central Pollution Control Board (CPCB), and Ministry of Environment and Forest, Govt. Evidence from Karachi, Pakistan, Seoul, Republic of Korea, and the City of El-Mina, North Lebanon, use GIS technology to visualize and analyze the extent of the problem. Geographical Information Systems (GIS) software can detect noise hot spots, spatial relationship with road network and building structure, which helps organize the noise risk zones, development of cities and towns, and propose control measures. ![]() ![]() Evidence shows an increase in mortality and prevalence of cardiovascular disease in the noise-exposed groups and a loss of 45,000 disability-adjusted life-years (DALY) every year for children aged 7–19 years in the high-income countries. In 1999, World Health Organization (WHO) had reported several adverse effects of noise pollution on humans and estimates that ten percent of the world's population is exposed to noise pollution that could eventually result in permanent hearing loss. ![]()
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