VTT Technical Research Centre of Finland, P.O. Box 1000, FI-02044 VTT, Espoo, Finland.
Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
J Acoust Soc Am. 2021 Apr;149(4):2238. doi: 10.1121/10.0003509.
Even though some individuals subjectively associate various symptoms with infrasound, there are very few systematic studies on the contribution of infrasound to the perception, annoyance, and physiological reactions elicited by wind turbine sound. In this study, sound samples were selected among long-term measurement data from wind power plant and residential areas, both indoors and outdoors, and used in laboratory experiments. In the experiments, the detectability and annoyance of both inaudible and audible characteristics of wind turbine noise were determined, as well as autonomic nervous system responses: heart rate, heart rate variability, and skin conductance response. The participants were divided into two groups based on whether they reported experiencing wind turbine infrasound related symptoms or not. The participants did not detect infrasonic contents of wind turbine noise. The presence of infrasound had no influence on the reported annoyance nor the measured autonomic nervous system responses. No differences were observed between the two groups. These findings suggest that the levels of infrasound in the current study did not affect perception and annoyance or autonomic nervous system responses, even though the experimental conditions corresponded acoustically to real wind power plant areas.
尽管有些人主观上将各种症状与次声联系起来，但对于次声对风力涡轮机噪声引起的感知、烦恼和生理反应的贡献，几乎没有系统的研究。在这项研究中，从风力发电场和住宅区的长期测量数据中选择了声音样本，包括室内和室外的声音样本，并在实验室实验中使用。在实验中，确定了风力涡轮机噪声的可听和不可听特性的可检测性和烦扰性，以及自主神经系统反应：心率、心率变异性和皮肤电反应。参与者根据是否报告经历过与风力涡轮机次声相关的症状分为两组。参与者无法检测到风力涡轮机噪声的次声内容。次声的存在对报告的烦恼或测量的自主神经系统反应没有影响。两组之间没有观察到差异。这些发现表明，即使实验条件在声学上与实际风力发电场区域相对应，本研究中的次声水平也不会影响感知、烦恼或自主神经系统反应。
