Abstract
Rating scales for environmental noise are varied in their calculation procedure. Among them WECPNL (weighted equivalent continuous perceived noise level) is the rating scale for aircraft noise currently being used in domestic and applied only for aircraft noise. However <TEX>$L_{dn}$</TEX> calculated from <TEX>$L_{eq}$</TEX> <TEX>$L_{eq}$</TEX> is used as a rating scale for not only aircraft noise but also environmental noise. Besides, it is easy to calculate and internationally preferred. It is, therefore, not adequate for the evaluation of residents' exposure. Moreover it is very difficult to measure the aircraft noise by WECPNL due to the complicated calculating procedures if automatic measuring system is not used. Accordingly. this study aims to propose alternative evaluation procedure for the aircraft noise. To achieve this purpose, the data measured by automatic measuring system were gathered and calculated with three evaluation procedures : WECPNL <TEX>$L_{eq}$</TEX> and <TEX>$L_{dn}$</TEX>, and the results calculated from different methods were compared and analyzed.
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