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BERISTÁIN, Sergio. El ruido es un serio contaminante. In: CONGRESSO IBEROAMERICANO DE ACÚSTICA, SIMPÓSIO DE METROLOGIA E NORMALIZAÇÃO EM ACÚSTICA E VIBRAÇÕES DO MERCOSUL, 1998, Florianópolis. Anais... Florianópolis, 1998.
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Abstract

Sound has been present with mankind from the very beginning, it allows communication at different distances, depending on the source employed, such as voice, drums, whistles, etc. Sound has also serve human beings for entertainment, relaxation, meditation with songs and other sounds which produce pleasure, fear or even paroxism. Therefore, it is divided in three mayor study areas; Voice Music and Noise. The first one is used to send intelligent messages, allowing thoughts exchange in the most efficient fashion conceived so far. Music is made basically from combinations of harmonic sounds, transmiting emotions and is a pleasure to listen to. Noise is the most controversial sound. It is not too hard to find people who like to produce it and even enjoy it, nevertheless, most of the population find it annoying, and in high levels can induce temporal or permanent hearing loss, so that it is considered as the most subtle pollutant generated by humans, specially after the Industrial Revolution. For all those reasons, Noise has been widely studied all over the world in areas such as live or eletronic communications; in transport systems, to the passengers and to the community; domestic appliances; hospitals, building sites; working sites; academic and recreational environments, neighbourhoods; etc, etc.
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