基于烦恼改善程度优选噪声控制方案

Optimization of noise control schemes based on improvement of annoyance

影响噪声烦恼的声学参量较多,然而在传统噪声控制工程中,往往仅根据A计权声压级所需降低量进行控制方案设计,未能从烦恼改善程度优选方案.为此,本研究提出一种基于烦恼改善程度优选噪声控制方案的方法,并将该方法应用于变电站声屏障噪声控制方案的比选.结果表明,同一声屏障方案对不同关心点噪声烦恼的改善程度差异较大,A计权声压级降低量最大的声屏障方案对噪声烦恼的改善效果未必最好.因此,噪声控制工程设计中,宜根据所关心的声环境保护目标与噪声源的相对位置,选取对保护目标处噪声烦恼改善程度较大的方案.

A lots of acoustic factors affect noise annoyance.However,in traditional noise control engineering,design of control scheme is usually based on the required reduction of A-weighted sound pressure level rather than the improvement of noise annoyance.In this study,based on the improvement of noise annoyance,a method optimizing noise control schemes was proposed,and this method was applied to the optimization of sound barriers for a substation.Results showed that the same sound barrier had a great different effect on improving noise annoyance of different interested points,and the sound barrier having a better reduction of A-weighted sound pressure level maybe was not the best for improving noise annoyance.Therefore,design of noise control scheme should consider the relative location between noise source and interested sound environmental protection target,and select the best one for improving noise annoyance.