Noise pollution

Noise pollution

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By D. Melendi

The truth is that the societies of our time are obviously producers of sounds and noises, which frequently have a variety, intensity and durability, which constitute a form of physical pollution due to their effects: noise pollution. Let's think about the noise generated in cities by the dense automobile and air fleet or industrial activity.

The auditory system in humans is adapted to receive and perceive sounds and noises within a certain range of intensities, if this is exceeded and the exposure is sustained, harmful physiological and psychophysiological effects begin to occur on health.

All people subjected to these acoustic intensities are exposed to these pathologies, either by working with noisy equipment (motors, various machines, etc.) or by living in acoustically polluted urban centers.

The unit with which sound intensity is measured is the Bel, or its decimal form the decibel (dB). 0 dB corresponds to absolute silence; a normal conversation generates 60 dB, a reasonable intensity to listen to music has 80 dB, a quiet neighborhood has 40-50 dB and the street of an average city reaches 80 to 100 dB. In a nightclub, the noise level far exceeds 120-130 dB and the same happens, frequently, with portable musical equipment with headphones.

From 100 dB, if the noise or sound is sustained, harmful effects on our health begin to occur. These manifest as auditory fatigue, professional deafness, and acoustic trauma that lead to a decrease in hearing perception and in many cases to its total loss. Noise pollution also produces psychophysiological effects that are manifested at the level of sleep disturbances, lack of concentration, increased stress, depression syndromes and, in general, a decrease in the quality of life

Likewise, noise pollution affects animal populations, as has been seen with the installation of industries and airparks that generate extreme noise in non-urban areas.


* Promote standards that regulate noise production, especially in large cities and related to transport and industry.

* Minimize the production of loud sounds and noises, using elements for acoustic insulation. There is a wide range of them, both for home construction and for industry in terms of technology and occupational health.


Video: Why do we Blink when we hear Loud Sounds? #aumsum #kids #science #education #children (July 2022).


  1. Balar

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  2. Lucca

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  3. Goltilmaran


  4. Manauia

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