Sound Traffic Environment Inc., Koya-Amidaji-Machi 10, Chuo-Ku, Kumamoto 860-0033, Japan.
Shimane University, Nishikawatsu-Cho 1060, Matsue 690-8504, Japan.
J Acoust Soc Am. 2018 May;143(5):2901. doi: 10.1121/1.5037567.
In December 2014, a new terminal building was opened at the Hanoi Noi Bai International Airport (HNBIA) with two runways, causing a 20%-30% increase in the number of flights. Three socio-acoustic surveys were conducted in August-September 2014, February-March 2015, and August-September 2015, to contribute not only to the environmental impact assessments and aircraft noise policies in Vietnam but also to more global intervention studies. Because of the change of runway use, in addition to the increased number of flights, noise exposure at each site changed considerably among the surveys. Changes in the noise exposure from the first to the second or third survey (ΔL and ΔL) were used as a measure of exposure change. Multiple logistic regression analysis showed that ΔL has a significant positive effect on annoyance regardless of ΔL ranges, but the effect of ΔL on insomnia was significant only for ΔL > 0. Annoyance increase in the overall ΔL range may be caused by the respondents' recognition of increase in emission in addition to practical increase in exposure. More severe attitudes to airplanes around HNBIA might increase annoyance even if noise exposure decreases. Thus, the change effect clearly occurs in annoyance but partially in insomnia.
2014 年 12 月，河内内排国际机场（HNBIA）启用了一个新的候机楼和两条跑道，这使得航班数量增加了 20%-30%。2014 年 8 月至 9 月、2015 年 2 月至 3 月和 2015 年 8 月至 9 月进行了三次社会声学调查，不仅为越南的环境影响评估和飞机噪声政策做出了贡献，也为更多的全球干预研究做出了贡献。由于跑道使用的变化，除了航班数量的增加外，每个地点的噪声暴露在调查中也有了很大的变化。将第一次和第二次或第三次调查之间的噪声暴露变化（ΔL 和 ΔL）作为暴露变化的衡量标准。多变量逻辑回归分析表明，无论 ΔL 范围如何，ΔL 对烦恼都有显著的正效应，但 ΔL 对失眠的影响仅在 ΔL>0 时显著。总体 ΔL 范围内的烦恼增加可能是由于除了实际暴露的增加之外，受访者对排放增加的认识。对 HNBIA 周围飞机的更严厉态度可能会增加烦恼，即使噪声暴露减少。因此，变化效应显然在烦恼中发生，但在失眠中部分发生。
