Abstract
Horizontal axis wind turbines for which the rotor is mounted downwind of the supporting tower generate low‐frequency impulsive noise due to the passage of the blades through the tower wake. The design and siting of wind turbines which are acoustically acceptable require an understanding of the human perception of wind turbine noise and any noise‐induced building vibrations resulting from their operation. This paper will describe a series of laboratory experiments performed to determine the detection thresholds of real and synthesized wind turbine noise with and without the presence of background noise. The results will be compared with predictions based on assumed auditory filter bandwidths and pure tone threshold levels. In addition, the prediction of noise‐induced building vibration and its detection will be discussed. [Work supported by NASA Langley Research Center.]
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