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Acoustics , a term originating in the Greek language, can be used in different ways. As adjective , refers to what is linked to ear (the organ that allows hearing) or what is conducive to the sound being generated or propagated.

For example: “When this machine overheats, it emits an acoustic signal to notify the operator”, "I will perform acoustic conditioning of the laundry to turn it into a radio studio", "By the explosion, the young man suffered damage to the acoustic nerve".

Acoustics is also the branch of the physical which is responsible for the generation, propagation, storage and reception of a sound, an ultrasound or an infrasound. In this way, it works with mechanical waves whose propagation develops through a gaseous, liquid or solid matter.

Talk about musical acoustics , in this sense, to name the specialization focused on the physical issues of the music , either in the generation, the broadcast or the audition. Objective and subjective issues come into play in these studies.

The acoustic music , on the other hand, is the one generated without the use of electronics or electricity . A acoustic guitar , in this way, he uses his soundboard to amplify the sounds , unlike the electric guitar (which transforms the vibrations of the strings into different electrical signals).

As noun , the notion of acoustics refers to characteristics of a space in terms of the possibilities it offers to receive the sounds. A place with good acoustics is one that favors the faithful reception of a sound: “This theater has excellent acoustics”, “I don't like the concerts that take place in this stadium: the acoustics are not good”.

On the other hand, we talk about noise pollution to refer to one of the most serious problems of modern societies, since it is a phenomenon that affects our Health without us being aware of them, simply by crossing the foci of noise or, worse, by staying in them for long periods of time.

It is important to note that noise pollution is an almost inevitable consequence of modern life, and that is why it represents a very big challenge for governments. Let's see below the most common sources of noise pollution :

* industrial activities : at this point we find the effect which generates the activity of factories and mines, among other establishments. If the people in charge of your organization do not take appropriate measures to prevent the escape of large levels of noise outside, then they become important threats to the health of citizens;

* transport : This is, perhaps, the most common source of noise pollution, or that which the public usually perceives as the main cause of this problem. It occurs especially in large cities , where the volume of cars that travel the streets is overwhelming;

* construction : especially in cities with a healthy and growing economy, construction takes place throughout the year, either to expand or maintain buildings, and this generates a series of various disorders, among which pollution stands out acoustics. In fact, workers are required to use the so-called headphones protection, to take care of your ears from the noise that your tasks inevitably produce;

* social habits : Although this takes place mainly in the central areas of the cities, night activities that include the reproduction of music to a large intensity In addition to shouting and other noises until late at night, they can deprive the neighbors of rest, which results in various health disorders.

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