Wind turbine dangers known since 87

Wind turbine dangers known since 87 | The Australian (subscription):

HEALTH impacts caused by low-frequency noise from wind turbines have been known to US researchers and the renewable energy industry for more than 25 years.
American researchers used mock homes, big speakers and seven volunteers to simulate and measure the impact of low-frequency noise produced by early model, two-blade wind turbines under controlled conditions."
A November 1987 report prepared for the US Department of Energy said the impact of low-frequency noise generated by wind turbines was often "confined to within surrounding homes" and that residents became more sensitive to the impact over time.
The laboratory experiments found that "people do indeed react to a low-frequency noise environment".
The study, A Proposed Metric for Assessing the Potential of Community Annoyance from Wind Turbine Low-Frequency Noise Emissions, was prepared in response to earlier research into "acoustic disturbances" associated with the operation of a wind turbine near Boone, North Carolina.
It found that the standard A-weighted measure for sound was "not an adequate indicator of annoyance when low frequencies are dominant".

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