As a whole, evaluating health risks of LFN (20-200 Hz) from wind turbines is important. To assess LFN levels in local community is the first step to evaluate health risks of wind energy. This study aims to measure exposure of LFN to near-by residents (L_(eq) dB(A)) from wind turbines. L_(eq) dB(A) in indoor environments close to one type of wind turbines with different building materials (cement (CM), cement with brick (CB)) were assessed with concurrent outdoor L_(eq) dB(A) measurements with sample size of five-min measurements up to 576. Preliminary results indicated that average sound level differences of outdoor and indoor environments were 13.8-14.3 and 8.4-10.9 dB(A) for house 1 and house 2, respectively, in the wind speed in the range of 0-2 m/s. LFN reduction were significantly different between the two types of residences. Those results of continuous monitoring for LFN will be used in the subsequent health impact assessment.
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机译：总体而言，评估风力涡轮机的LFN（20-200 Hz）的健康风险非常重要。评估当地社区的LFN水平是评估风能健康风险的第一步。这项研究旨在测量LFN对风力涡轮机附近居民的暴露（L_（eq）dB（A））。在室内环境下，对接近一种具有不同建筑材料（水泥（CM），砖混水泥（CB））的风力涡轮机的L_（eq）dB（A）进行了评估，同时进行了室外L_（eq）dB（A）测量， 5分钟测量的样本量，最多可进行576次。初步结果表明，在1房和2房中，室外和室内环境的平均声级差分别为13.8-14.3和8.4-10.9 dB（A）。范围为0-2 m / s。两种住所的LFN减少幅度明显不同。连续监测LFN的结果将用于随后的健康影响评估。
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