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Estimation of future sound power level of road vehicles based on noise emission regulation

机译:基于噪声排放法规的道路车辆未来声功率水平估算

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摘要

In order to predict road traffic noise for environmental impact assessments, future sound power levels of the vehicles must be estimated. In this paper, the formulas of future sound power levels that were estimated based on the past regulation ofaccelerated running noise are compared with the ones based on sound power level data measured in 1996. As a result, the validity of the formulas has been partly verified. Further, we have estimated the future sound power levels with our proposedestimating method based on the regulation of steady running noise and with the usual one based on the regulation of accelerated running noise, reflecting the latest regulation for motor vehicles noise. Consequently, the future sound power levelscalculated by both the methods are smaller than those obtained from the data measured above by 0.8-1.5 dB.
机译:为了预测道路交通噪声以进行环境影响评估,必须估计车辆的未来声功率水平。本文将基于过去的加速行驶噪声法规估算的未来声功率级公式与基于1996年测得的声功率级数据的公式进行了比较。结果,部分验证了该公式的有效性。 。此外,我们通过基于稳态行驶噪声调节的拟议估算方法和基于加速行驶噪声调节的常用估算方法估算了未来的声功率水平,这反映了对汽车噪声的最新调节。因此,用这两种方法计算出的未来声功率级比从上面测得的数据获得的声级小0.8-1.5 dB。

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