Posts Tagged:#smartcities

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Environmental #noise is one of the top environmental risks to health. According to #WHO study – – long-term exposure to an excessive level of noise can have adverse effects not only on hearing ability but also on one’s homeostasis – an internal physiological balance. Sound level is measured in #decibels (dB). Music, speech, or noise is a combination of many sounds of different frequencies. #dBA – is a weighted […]

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