Acoustics+2

 **Big City **



The main sources of noise pollution in today's society from motor vehicles, estimated at nearly 80%, 10% corresponds to the industries, 6% to rail and 4% bars, public buildings, pubs, industrial workshops, etc.. The construction of highways near several population centers have multiplied the effect of traffic noise and the sound it generates. For example areas built near railway lines or airports, where noise pollution is greatly increased. The sources of noise are very diverse, from construction sites or industrial plants to local music, to animals and people, aircraft or weather phenomena. Traffic has become one of the main sources of noise

There are ways to avoid noise pollution. One of them is not performing buildings with concave shape, as it traps the sound of the city making noise pollution. Another, is using absorbent acoustic spaces for receptions (walls or slabs), this will significantly reduce the sound of the city. Use double facades in the building, not only helps to protect the areas from sunlight, but act as obstacles for sound waves, bouncing back to the city.

We can solve problems involving the city and the local administration, either by campaigns to reduce vehicular flow. That not only reduces noise pollution, also pollution in general. The criminalization of local vehicles and equipment sounds, loud music may be a method to solve the acoustic problems of the city

