Documents filed under Noise
Health Canada asked the Council of Canadian Academies to conduct an in-depth expert panel assessment. The Panel’s report presents findings on the acoustic characteristics of wind turbine noise; evidence on causal relationships between exposure to wind turbine noise and adverse health effects; knowledge gaps and further research; and promising practices to reduce adverse community response. The resulting report is evidence-based and does not espouse recommendations. Its purpose, rather, is to assess the scientific evidence on the question of wind turbine noise and human health in order to provide a foundation of knowledge to support governments, policy-makers, communities, and the industry. A brief summary of the study is provided below. The full report can be accessed at the links on this page.
Virginia Stewart Love, a member of Victims of Wind in Ontario, published this open letter in response to the recently released literature review by the Canadian Council of Academies CCA which found that annoyance can be caused by wind turbine noise – a clear adverse health effect. Ms. Love's full letter is posted below and can be accessed by clicking the link on this page.
This important study conducted at a home situated within 1300 feet of the Falmouth MA wind turbines identified infrasonic sound pressure levels inside the residence. These results are similar to results from other international researchers with references given in the report. The executive summary and conclusions sections of the report are provided below. The full report can be accessed by clicking the link on this page.
Acousticians Paul D. Schomer and George Hessler critiqued, and positively supported Steven Cooper's study of infrasonic emissions at the Cape Bridgewater wind facility. An initial critique is provided below and can be accessed by clicking the links on this page. In addition, Dr. Schomer and Mr. Hessler have supplemented their review with a response to the Australian wind energy supporters who have been critical of Steven Cooper's report. The supplemental commets can also be accessed from this page.
Dr Christopher Hanning submitted this testimony to the Australian Senate Select Committee on Wind Turbines explaining the impact of turbine noise on sleep. The summary of his testimony is provided below. The full submission can be accessed at the links on this page.
The Acoustic Group’s Principal, Mr Steven Cooper, was commissioned by wind developer Pacific Hydro to undertake an investigation into “noise” emitted at the Cape Bridgewater wind energy facility. Symptoms reported by residents living near the turbines include severe nausea, headaches, ear pressure, inability to concentrate, and severe and debilitating sleep problems. The primary document explaining the study and the results can be downloaded from this page. The full study, including six appendices, can be accessed by clicking the links on this page.
The authors of this paper conducted an extensive literature review of scientific articles that address the association between wind turbine noise exposure and any suspected health-related outcomes. The abstract of their findings is provided below. The full paper can be accessed by clicking the links on this page. A second link on this page includes three tables listing the health studies reviewed by the authors.
The aim of this study was to investigate the time dependent nature of unweighted wind farm noise and its perceptibility, with a focus on infrasound. Measurements were carried out during shutdown and operational conditions and results show that wind farm infrasound could be detectable by the human ear although not perceived as sound. The abstract and conclusion of the paper can be read below. The full paper can be accessed by clicking the link(s) on this page.
This important study examines the noise emissions of an operating wind facility during periods when the turbines are generating electricity and when the turbines are shut off. The abstract of conclusion of the study are provided below. The full study can be accessed at the links on this page. The study found "consistent and significant differences in noise spectra ...for the shutdown and operational cases, particularly for frequencies below 100 Hz. These differences can be observed at distances up to 8.7 km from the wind farm.
In this paper, William K.G. Palmer discusses how interior room shape and size contribute to turbine noise complaints when wind turbines are sited nearby. The abstract of the paper is provided below. The full paper, with presentation slides, can be accessed by clicking the link(s) on this page. Mr. Palmer presented his findings at the October 2014 Acoustical Society of America proceedings.
In this study, neurobiologist Markus Drexl and others at the Ludwig Maximilian University in Munich, Germany, examined the effects of low frequency noise on human hearing. The found that after short bursts of LF sound the ear showed signs that, over time could damage hearing. The introduction and conclusion of the study's report are provided below. The full report can be accessed by clicking the links on this page.
This study examines the impact of wind turbine sound emissions and the potential of masking of biological signals between species present in desert habitats. Turbine noise appear to increase the ambient noise level to the point where bioacoustic activity could not be detected. An abstract and summary of the report is provided below. The authors have not yet released the full report.
Acoustician, Steven Cooper, has been asked to measure noise emissions at the Cape Bridgewater wind energy facility in Australia following years of noise complaints since the project was placed in service in 2008. Mr Cooper has tested inside three homes near the wind facility over eight weeks, including a two-week shutdown of the turbines. His preliminary report can be accessed by clicking the link(s) on this page. His initial findings are provided below.
This letter written by Dr. Nina Pierpont responds to concerns about a wind energy facility proposed to be built in Turkey. This letter presents a comprehensive discussion of what is known today as Wind Turbine Syndrome. A short excerpt of the letter is provided below. The full letter can be accessed by clicking the link on this page. In the letter, Dr. Pierpont makes specific reference to the work of Dr. N. D. Kelley on the issue of low-frequency noise eminating from operating wind turbines.
This report describes the results of full spectrum acoustic monitoring conducted at a number of homes located between 2 km out to nearly 10km from the Waterloo Wind Energy facility. This monitoring was independent of the that conducted by the South Australian Environment Protection Authority (SA EPA) and was requested by Mrs Mary Morris and other concerned residents in the Waterloo district. The monitoring occurred during the period of the South Australian EPA Acoustic Survey, conducted in mid 2013. The conclusions of the monitoring are provided below. The full report can be accessed by clicking the link(s) on this page.
This important paper written by Drs. Alec Salt and Jeffery T. Lichtenhan, both Professors of Otolaryngology at Washington University in St. Louis, examines the many ways by which unheard infrasound and low-frequency sound from wind turbines could distress people living nearby. The introduction and conclusion of the paper is excerpted below. The full paper can be accessed by clicking the link(s) on this page.
This informative response letter provides useful detail on the work of Mariana Alves-Pereira and her study of how wind turbine infrasound impacted the health of family members living near a wind project. Due to health concerns, the Supreme Court of Justice in Portugal ordered in 2013 that four of the wind turbines, initially erected in 2006, be removed. A portion of the document is provided below. The full letter can be accessed by selecting the links on this page.
Dr. Bruce Rapley filed this response letter with the Australian Medical Association (AMA) objecting to the AMA's position on wind turbine noise that the "available Australian and international evidence does not support the view that the infrasound or low frequency sound generated by wind farms, as they are currently regulated in Australia, causes adverse health effects on populations residing in their vicinity." The concluding paragraphs of the letter are posted below. The full letter can be accessed by clicking the links on this page.
This important paper prepared by acoustics expert Les Huson examines the permitted noise limits imposed on the Flyers Creek wind energy facility in the context of actual infrasound noise emissions from other operating wind projects. Mr. Huson determines that the Flyers Creek project will not satisfy the noise conditions or the South Australian EPA Environmental Noise Guidelines for wind energy facilities. Excerpts of the paper are provided below. Readers are encouraged to download and read the full paper by clicking the link on this page.