Dr D Sayantan - Noise pollution

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dear students let us discuss noise pollution today you know the term noise is very common in day-to-day life noise refers to any kind of loud sounds which will have a negative impact on the biosphere it can lead to impairment of hearing psychological and mental stress not only that it can also disturb the

efficiency which we work noise pollution is measured in terms of decibel before getting into the numerical values of decibel let us first see what a decibel is as per britanica decibel is the unit of measurement of relative loudness of sounds intensity of sounds in decel is 10 multiplied with the log to the base

10 S1 divided by S2 where S1 and S2 are the intensity of the two sounds to understand more simply the decibel reflects a comparison of the intensity of the sound with that of a sound that just perceptible to the human ear for example when we normally speak sound is approximately 60 DB which is

one lakh times more intense than a faint Whisper of 1 D I hope you are now clear with the concept of decibel moving forward there are various types of noises that we come across more often some noises tend to be of continuous type for example in the factories workers are exposed to The

Continuous noise of machineries then some noises can be intermittent ones these are the noises that are produced at a regular interval one of the most prominent intermittent noise includes The Unwanted sounds that the vehicles produce on the road another kind is the impulsive noise this is the noise which are produced instantly followed by its reduction for example