Example of monitoring sound generated from wind turbine

Abstract

We developed a monitoring system for sounds generated from wind turbine and measured low-frequency sounds for several weeks. From the results, we introduced a case where a sound including pure tone was observed around 120 Hz when the rotation speed of the wind turbine was high. In addition, an example was shown in which it was determined whether or not wind noise was included in the observation data by using the level difference between the two microphone outputs installed in the large wind screen.