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在我国城市交通噪声中较大的声源是车辆的喇叭,为了计算喇叭声对城市交通噪声的作用,本文设想了一种“噪声当量车”模型.用这样的模型,可以对车辆和喇叭噪声的总声级进行预计,所得结果与在高层建筑的各层所测得的数据比较,一致性相当好.此外,文中还得出被超越百分率声级L_(50)与高层建筑各层高度的简单关系式.最后根据理论分析对城市交通噪声的控制措施提出一些建议。
In our country, the larger source of traffic noise is the vehicle’s horn, in order to calculate the role of horn sound on urban traffic noise, this paper presents a model of “noise equivalent car.” With this model, the noise of the vehicle and the speaker Of the total sound level, the results obtained are fairly consistent with the data measured at various levels of the high-rise building.In addition, the article also finds that the ratio of the sound level L_ (50) exceeded the height of the high-rise building Simple relationship.At last, some suggestions are proposed according to the theoretical analysis of the control measures of urban traffic noise.