ABSTRACT
The operation of large wind turbine generators in the United States and Europe has, in some instances, resulted in adverse community reactions to the associated low-frequency noise. The resulting frequency range for the perception studies reported is believed to extend from low infrasonic up into the normal audible range (100Hz). There are significant propagation phenomena that relate to the very low-frequency radiated noise. Specific data are included on perception and complaints due to low-frequency noise. Criteria are presented for perception of low-frequency noise and noise-induced vibrations, and are compared with available case history data. Both vibrations and low-frequency noises were readily observable at the trailer and at the frame building which were at distances of 275m and 213m, respectively, from the machine. Available information is reviewed on the generation, propagation and perception of low-frequency noise components from large wind turbines. Criteria are proposed for the perception of low-frequency noise and noise-induced house vibrations due to wind turbine operations.
