Immission measurements of wind turbine noise with a microphone array to set up a sound database
* Presenting author
Today there are several databases available on the internet where different sounds for many purposes can be found. Especially common sounds are available in these collections. Other sounds such as sounds of wind turbines are rarely found. For this reason in science, sounds of wind turbines are mainly artificially generated. These simulations are based on complex models that imitate the reality very well, but do not fully reflect it. In order to close this gap of real recordings, the research project X-Eptance Imulse is carrying out sound measurements with an acoustic camera in wind farms. From these measurements, not only the real sounds of a wind turbine can be determined. Through analysis in frequency domain, it is possible to generate a specific signature for a respective type of a wind turbine.In a first field campaign, measurements were taken on the same type of wind turbine in two wind farms. The analysis of these measurements has led to the first indicators for the signature of this type. Presently, the analysis is performed manually. Later on, it is planned to perform the analysis automatically and to store the sounds and signatures in public accessible database.