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Is DNL appropriate for airport noise zoning

Abstract : The use of the DNL metric in airport noise zoning is based in the works of Schultz, that were later improved by Fidell. The basic idea is to use the percentage of highly annoyed people as a parameter to organize the area around airports. In urban zoning it is recommended to use the equivalent sound level LAEQ, which uses different criteria to day and night periods to define the land use. With regards to airport noise one may use LAD and LAN metrics which are the equivalent sound levels determined for day and night period, respectively. In this case, the maximum levels chosen to the establishment of the zoning are based on the land use. It is possible, through a simple equation, to determine the DNL level associated to a LAD, LAN pair. The inverse problem, however, has not a unique solution, once this relation depends on the number of daily and night flights of the airport. Thus, the use of DNL in airport noise zoning may lead to completely different results for different airports. Examples are presented and discussed for two main brazilian airports: Recife and Congonhas.
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Jules Ghislain Slama, Felix Mora-Camino, Téo Cerqueira Revoredo. Is DNL appropriate for airport noise zoning. ACOUSTICS 2008, Jun 2008, Paris, France. pp 1967-1971, ⟨10.1121/1.2933575⟩. ⟨hal-01086743⟩



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