Research of aircraft noise evaluation and limits

Along with the European Union to promote the day - and - night equivalent sound level DENL, a growing number of countries have adopted the equivalent sound level DNL or DENL instead of the traditional evaluation for airport noise evaluation, and in sensitive areas the maximum sound level limits was used, some also use the TALA (Time-above an A-weighted sound level threshold). China promulgated the “GB9660 - 88 measurement of aircraft noise around airport” and “GB9661-88 environment standard of aircraft noise around airport”, rating for the weighted equivalent continuous perceived noise level WECPNL, and it is independent of other acoustic environmental standard. The state environmental protection department proposed to revise the criteria. In this paper, based on the large amount of measured data, under the aircraft noise statistical analysis, trying to build the relationship between WECPNL, Leq, Lmax; combined with the research results of relationships between noise level and annoyance; investigating the suitability of the current criteria (evaluation and limits), and explore the establishment of a set of aircraft noise evaluation method, which can not only reflect the characteristics of aircraft noise, but also better associated with living requirements.