Noise menace

Nowadays in our urban society, noise pollution is an acute problem. “Noise is the wrong sound, in the wrong place at the wrong time.” Loudness of sound is a sensory dependent parameter. It is directly related to intensity of sound and measured by decibel (dB). For instance according to WHO, permissible loudness in an industrial area is 75dB and 45dB is the safe noise level for a city. Unfortunately, the average loudness of sound is above 90dB in our metropolitan cities, which is double the recommended limit. Hydraulic horn is the leading cause of sound pollution in the city. Moreover, vehicles with under performing engines, blenders, grinders, electric drills, stone and brick crushers, various types of mills, loud speakers, aircraft & trains also cause noise pollution.
Let us build a noise pollution free Bangladesh.