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Subjective annoyance caused by indoor low-level and low frequency noise and control method

机译：室内低频低噪声引起的主观烦恼及控制方法

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摘要

The influence of low-level noise has not been widely noticed. This paper discovered that low-level and low frequency noise (A-weighted equivalent level L_(eq) <45 dB) causes higher probability of subjective annoyance. The fuzzy mathematic principle was applied to deal with the threshold level of subjective annoyance from noise in this study; there is preferable relationship between the indoor noise and noise annoyance at low frequency noise level. Study indicated at the same centered noise level, the change of annoyance probability is mainly caused by the change of the frequency spectrum characteristic of the indoor noise. Under low noise level environment, without change of the medium-low frequency noise, the slight increase of medium-high frequency noise level with the help of noise sheltering effect can significantly reduce the noise annoyance. This discovery brings a new resolution on how to improve the environmental quality of working or living places. A noise control model is given in this study according to the acoustic analysis.
机译：低电平噪声的影响尚未引起广泛关注。本文发现，低频和低频噪声（A加权等效电平L_（eq）<45 dB）引起主观烦恼的可能性更高。本研究应用模糊数学原理处理噪声引起的主观烦恼阈值。在低频噪声水平下，室内噪声与噪声烦扰之间存在较好的关系。研究表明，在相同的中心噪声水平下，烦扰概率的变化主要是由室内噪声频谱特性的变化引起的。在低噪声环境下，不改变中低频噪声，借助隔声效果使中高频噪声水平略有提高，可以大大降低噪声烦扰。这一发现为如何改善工作或居住环境的环境质量带来了新的解决方案。根据声学分析，本研究给出了噪声控制模型。

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