Acoustical Behaviour of a Wind Turbine

Thanks to the evolution of both computer and electronic science it is now possible (and easy) to use the acoustic imagery technique to investigate the noise behaviour of a wind turbine under operation. This article introduces the beamforming technique used in acoustic imagery for noise problem troubleshooting. It describes the parameters that are used to produce accurate acoustic images to locate the noise source of interest. Non-stationary noise sources, fast transient events and also mobile noise sources are all easily located with the technique.