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Variability in road traffic noise levels

机译：道路交通噪声水平的变化

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摘要

Environmental noise levels can vary over a wide range as a result of the diversity of site conditions and activities occurring during field measurements. This variability, extremely important for a correct measurement interpretation, is often a source of disagreement when applying standards and regulations, as there is no consensus about how to estimate and present it. The paper contributes to this technical debate by investigating the statistical variability associated with a large measurement database acquired under field conditions. The database consists of 2 week's noise recordings at each of 50 separate locations in residential areas affected mainly by road traffic noise. The results show increased variability (standard deviations) at the lower values of either logarithmic or arithmetic mean L_(Aeq) over the time periods investigated. It is anticipated that the observed relationships may be of assistance when estimating the noise level variability and the uncertainty associated with a noise measurement affected by road traffic or other environmental noise sources.
机译：由于现场条件和现场测量活动的多样性，环境噪声水平可能会在很大范围内变化。对于正确的测量解释而言，这种可变性非常重要，在应用标准和法规时通常会引起意见分歧，因为在如何估计和呈现方面尚无共识。本文通过调查与在野外条件下获得的大型测量数据库相关的统计变异性，为这场技术辩论做出了贡献。该数据库包括在主要受到道路交通噪声影响的居民区的50个不同地点中每个地点的2周噪声记录。结果表明，在所研究的时间段内，在较低的对数或算术平均值L_（Aeq）值下，变异性（标准差）增加。可以预期，在估计噪声水平的可变性和与受到道路交通或其他环境噪声源影响的噪声测量相关的不确定性时，观察到的关系可能会有所帮助。

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