In recent decades the use of wind turbines as important sources of sustainable energy has increased rapidly. Wind turbine manufacturers are constantly looking for opportunities to decrease the radiation of noise power, measured according to the IEC 61400-11 acoustic standard. Noise vibration and harshness engineers use sound visualization techniques as key tools in their effort to localize and reduce noise. A variety of sound visualization methods have been developed throughout history to improve the noise source information acquired. New developments enable the study of noise strength, location, radiation and distribution using visual approaches.
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