The subjective effect of low frequency content in road traffic noise
The subjective effect of low frequency content in road traffic noise
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DOI：
10.1121/1.4904542
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发表时间：
2015-01-01
影响因子：
2.4
通讯作者：
Flindell, Ian H.
中科院分区：
文献类型：
--
作者：
Torija, Antonio J.;Flindell, Ian H.
基于主观听力试验，Torija和Flindell[J.Acoust.SoC。上午好。135，1-4(2014)]观察到，典型城市主干道交通噪声中的低频成分对报告的烦扰的贡献似乎比从其客观或物理优势推断的要小。本文报告了一项更详细的研究，其目的是(I)确定低频成分相对于中高频成分在主观上占优势的声级差异，以及(Ii)在低频成分相对占优势的条件下，例如在中高频成分减少的室内，调查响度和烦扰之间的关系。结果表明，低频和中高频之间的差异至少需要+30分贝，才能使低频内容的变化与中高频内容的同等变化具有同样的主观效果。这表明，基于对低频内容的假设过度降权的A-频率加权的常见批评在该应用领域可能相对没有根据。(C)2015年美国声学学会。
Based on subjective listening trials, Torija and Flindell [J. Acoust. Soc. Am. 135, 1-4 (2014)] observed that low frequency content in typical urban main road traffic noise appeared to make a smaller contribution to reported annoyance than might be inferred from its objective or physical dominance. This paper reports a more detailed study which was aimed at (i) identifying the difference in sound levels at which low frequency content becomes subjectively dominant over mid and high frequency content and (ii) investigating the relationship between loudness and annoyance under conditions where low frequency content is relatively more dominant, such as indoors where mid and high frequency content is reduced. The results suggested that differences of at least +30 dB between the low frequency and the mid/high frequency content are needed for changes in low frequency content to have as much subjective effect as equivalent changes in mid and high frequency content. This suggests that common criticisms of the A-frequency weighting based on a hypothesized excessive downweighting of the low frequency content may be relatively unfounded in this application area. (C) 2015 Acoustical Society of America.