Traffic noise spectrum analysis: Dynamic modeling vs. experimental observations
Traffic noise spectrum analysis: Dynamic modeling vs. experimental observations
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DOI：
10.1016/j.apacoust.2010.04.002
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发表时间：
2010-08-01
影响因子：
3.4
通讯作者：
Botteldooren, D.
中科院分区：
文献类型：
--
作者：
Can, A.;Leclercq, L.;Botteldooren, D.
本文比较了两种用于城市噪声频谱评估的交通表示法：（i）基于平均车速和流量的静态表示法，（ii）考虑车辆沿网络沿着相互作用的动态表示法。这两种表示法进行了比较，其适合匹配真实的现场噪声水平，记录在三车道相当忙碌的街道。表示（i）无法再现与该站点对应的光谱包络。特别是，它低估了低频，这可以掩盖交通流量对城市音质的真实的影响。表示（ii）大大提高了估计。它保证了准确的环境噪声评估，因为它再现了现场遇到的所有交通情况。此外，其基于1s的结构允许以良好的精度评估光谱变化。(C)2010爱思唯尔有限公司版权所有。
This paper compares two traffic representations for the assessment of urban noise frequency spectrum: (i) a static one, based on mean vehicle speeds and flow rates, (ii) a dynamic one, which considers vehicle interactions along the network. The two representations are compared on their suitability to match real on-field noise levels, recorded on a three lane quite busy street. Representation (i) fails in reproducing spectra envelopes that correspond to this site. In particular, it underestimates low frequencies, what can conceal the real impact of traffic flow on urban sound quality. Representation (ii) greatly improves estimation. It guarantees accurate environmental noise assessment, since it reproduces all traffic situations that are encountered in the site. Moreover, its 1s-based structure allows for the evaluation of spectra variations, with a good accuracy. (C) 2010 Elsevier Ltd. All rights reserved.