A good overview of the wind turbine noise issue, written by physician Nina Pierpont, is available at www.aweo.org/Pierpont-noise-060204.pdf (40 KB). She explains the difference between A-weighted and C-weighted sound measurements and presents evidence that the C-weighted sound level from industrial wind turbines is much greater than the usually cited A-weighted level. The C-weighting includes more low-frequency sound, which can have a serious impact on quality of life and even health.
Pierpont also puts the sound levels of wind turbines and their impact into the context of current environmental and health guidelines.
tags: wind power, wind energy, wind farms, wind turbines, environment
