Resource Documents by Hartmann, Gernot
Ceranna, Lars; Hartmann, Gernot; and Henger, Manfred
Inaudible noise of wind turbines
Number of wind turbines and their size are constantly growing Wind turbines and wind farms generate strong infrasonic noise which is characterized by their blade-passing harmonics (monochromatic signals) Generated noise of wind turbines can theoretically be estimated geometrical spreading ≈ R−1 SPL ≈ rpm4 Recordings from field measurements near a single wind turbine show that the theoretical model is also valid for frequencies below a few Hz Minimum distance between an infrasound array and a wind farm can be estimated . . . Complete article »
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