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飞机和地面运载车辆的外部噪声是居民区的主要噪声源。已经发现这类噪声可用昼夜暴露计权的每年的日平均能量(即L_(dn)和DENL)来表述,一般说来它与噪声对房屋内居民的各种有害影响密切相关。通过对居民的调查可以分析地区噪声引起的烦扰和抱怨行为,从而可能用每日侵入室内和生活区主要噪声源的平均能量来预测地区噪声对人的冲击。当然采用简单的噪声能量概念时一定要考虑到它有很大的局限性,而且调查时的一些因素是多变的。虽然各地区的情况可能不同,居民对地区噪声的反应也会有差异,但是平均趋势是稳定的。通常噪声对人的影响不能直接用现有物理仪器测量,但当我们把噪声的某些物理特性与规定的
External noise from aircraft and ground vehicles is a major source of noise in residential areas. It has been found that this type of noise can be expressed as the daily average daily energy (ie, L dn and DENL) of day and night exposure weights, which are generally closely related to the various detrimental effects of noise on the occupants of the house. Surveys of residents can be used to analyze nuisance and complaint behaviors caused by regional noise, so that it is possible to predict the impact of regional noise on people by using the average daily energy penetration of major noise sources in indoor and living areas. Of course, the concept of simple noise energy must be taken into account when it has great limitations, and some of the factors in the investigation are varied. Although the situation may vary from region to region, residents’ response to regional noise may vary, but the average trend is stable. Often the effects of noise on people can not be directly measured using existing physical instrumentation, but when we compare some of the physical characteristics of noise with prescribed