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    STUDIA AMBIENTUM - Ediţia nr.1-2 din 2009  
         
  Articol:   NOISE POLLUTION – A PROBLEM OF THE BIG CITIES. CASE STUDY.

Autori:  D.-R. TAMAS-GAVREA, C. MUNTEANU. 		 
       
         
  Rezumat:  The problem of urban traffic noise pollution is universal and in the past few decades it has grown to the point that it has become a major concern. Sound is an important part of everyday life, but when sound becomes noise, we like to know that there are regulations protecting us from its detrimental effects. Noise regulation includes statutes relating to sound transmission established by national, provincial and municipal levels of government. Sounds are created when a vibrating source causes waves of acoustic energy to travel through a medium. The sound pressure waves move out from the vibrating source and become weaker the further they travel. Noise pollution can be defined as unwanted noise that disrupts, distracts, or detracts from regular functioning. Road traffic is probably one of the most serious type of noise pollution. It has become a serious problem now because of inadequate urban planning in the past. The main building houses were built on roads without buffer zones or adequate soundproofing. The problem has been compounded by increases in traffic volumes more rapidly than the expectations of the early urban planners. This paper presents a study of traffic noise pollution in Cluj-Napoca town. Equivalent noise levels were measured in four different districts. Measured values were compared with Romanian legislation allowed limits. The objective of the present study is to give answers and solutions to the influence of the noise pollutions factors on the environment.

Key words: environmental noise, noise pollution, equivalent noise levels, admissible values 		 
         
     
         
         
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