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Resource Documents: Noise (566 items)

RSSNoise

Also see NWW press release on noise

Documents presented here are not the product of nor are they necessarily endorsed by National Wind Watch. These resource documents are provided to assist anyone wishing to research the issue of industrial wind power and the impacts of its development. The information should be evaluated by each reader to come to their own conclusions about the many areas of debate.


Date added:  September 26, 2016
Health, Noise, WisconsinPrint storyE-mail story

Shirley Wind case crossover testimonies

Author:  Brown County Citizens for Responsible Wind Energy

The following one page statement, and the twelve case crossover testimonies attached, were submitted to the Brown County (Wisconsin) Board of Health on September 13, 2016, by Barbara Vanden Boogart, Vice President of BCCRWE (Brown County Citizens for Responsible Wind Energy).

In late July 2016, all of the Shirley Wind turbines were shut down for several consecutive days and nights – Monday, Tuesday, Wednesday, and part of Thursday, July 25-28. Not only were the wind turbines not operating during this timeframe, it also appears that all electric power to the wind turbines was also shut down for some or all of this timeframe, as evidenced by the fact that the red warning lights on top of the wind turbines were not illuminated during one or more of these nights. Also it was observed that work was being performed on the Shirley Wind substation during this timeframe.

After the wind turbines resumed operation during the day of Thursday, July 28, 2016, a number of Shirley Wind residents described what they experienced during this shutdown period when they were not exposed to any wind turbine emissions as compared to what they experience when the Shirley Wind turbines are operating and they are exposed to the wind turbine emissions. They then had their statements notarized.

These case crossover testimonies of several Shirley Wind turbine residents are attached and are being submitted with permission of the authors.

BCCRWE requests that members of the Brown County Board of Health, Human Services Committee, and Board of Supervisors consider the gravity of this evidence and testimony that appears supportive of not only a relationship between wind turbine emissions and adverse health effects to Shirley Wind residents but also confirms that the Brown County Board of Health’s “human health hazard” declaration is appropriate and that remedial action is needed to protect these adversely affected Brown County residents. Prior Shirley Wind resident testimony and acoustical experts’ ILFN test measurements at Shirley Wind, together with the vast body of professional documents that have been submitted, further support the relationship between Shirley Wind turbines and the adverse health effects reported by Shirley Wind residents.

Download original document: “Shirley Wind case crossover testimonies”

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Date added:  September 1, 2016
Health, Noise, OntarioPrint storyE-mail story

Before–after field study of effects of wind turbine noise on polysomnographic sleep parameters

Author:  Jalali, Leila; Bigelow, Philip; et al.

Introduction:

‘Sleep, a natural behavioral state and a vital part of every individual’s life, involves distinct characteristics and many vital physiological changes in the body’s organs that are fundamental for physical and mental health. The physiological processes involve protein biosynthesis, excretion of specific hormones, and memory consolidation, all of which prepare the individual for the next wake period. Fragmented and insufficient sleep can adversely affect general health impacting daytime alertness and performance, quality of life, and health, and potentially lead to serious long-term health effects.

‘Sleep disturbance is considered the most serious nonauditory effect of environmental noise exposure. Harnessing wind energy has resulted in a new source of environmental noise, and wind is one of the fastest growing forms of electricity production worldwide. Canada’s current installed capacity is over 10,000 MW, with an anticipated minimum of 55,000 MW by 2025. This growth in wind energy development is not without controversy, as health effects such as noise annoyance and sleep disturbance have been reported by residents living close to wind developments. Such reports are increasing in Canada and worldwide, despite the adoption of setbacks and other measures that have been effective for other sources of noise pollution. …’

Significant findings reported:

‘[R]eported quality of sleep significantly declined after exposure (P = 0.008). Participants also reported higher levels of stress before bedtime (P = 0.039) and in the morning (P = 0.064), and also reported feeling more sleepy (P = 0.013) in the morning and throughout the day (P = 0.014) after exposure. …

‘Noise difference [between preoperation and operation of turbines] correlated with the difference in the number of awakenings (r = 0.605, P = 0.001), SSC [sleep stage changes to a lighter stage] difference (r = 0.600, P = 0.001), arousal difference (r = 0.551, P = 0.004), and percentage of S2 [stage 2 sleep] difference (r = −0.499, P = 0.009).’

Leila Jalali, Philip Bigelow, Mahmood Gohari, Diane Williams, and Steve McColl, School of Public Health and Health Systems, and Mohammad-Reza Nezhad-Ahmadi, Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Ontario, Canada

Noise & Health 2016;18:194-205

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Date added:  July 8, 2016
NoisePrint storyE-mail story

Characterisation of wind farm infrasound and low-frequency noise

Author:  Zajamšek, Branko; Hansen, Kristy; Doolan, Con; and Hansen, Colin

This paper seeks to characterise infrasound and low-frequency noise (ILFN) from a wind farm, which contains distinct tonal components with distinguishable blade-pass frequency and higher harmonics. Acoustic measurements were conducted at dwellings in the vicinity of the wind farm and meteorological measurements were taken at the wind farm location and dwellings. Wind farm ILFN was measured frequently under stable and very stable atmospheric conditions and was also found to be dependent on the time of year. For noise character assessment, wind farm ILFN was compared with several hearing thresholds and also with the spectra obtained when the wind farm was not operating. Wind farm ILFN was found to exceed the audibility threshold at distances up to 4 km from the wind farm and to undergo large variations in magnitude with time.

Branko Zajamšek, Con J. Doolan
University of New South Wales, Sydney, Australia

Kristy L. Hansen

Flinders University, Adelaide, Australia

Colin H. Hansen
University of Adelaide, Adelaide, Australia

Journal of Sound and Vibration 370 (2016) 176–190
doi: 10.1016/j.jsv.2016.02.001

Download original document: “Characterisation of wind farm infrasound and low-frequency noise”

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Date added:  June 10, 2016
NoisePrint storyE-mail story

Short-term annoyance reactions to stationary and time-varying wind turbine and road traffic noise

Author:  Schäffer, Beat; et al.

[Abstract] Current literature suggests that wind turbine noise is more annoying than transportation noise. To date, however, it is not known which acoustic characteristics of wind turbines alone, i.e., without effect modifiers such as visibility, are associated with annoyance. The objective of this study was therefore to investigate and compare the short-term noise annoyance reactions to wind turbines and road traffic in controlled laboratory listening tests. A set of acoustic scenarios was created which, combined with the factorial design of the listening tests, allowed separating the individual associations of three acoustic characteristics with annoyance, namely, source type (wind turbine, road traffic), A-weighted sound pressure level, and amplitude modulation (without, periodic, random). Sixty participants rated their annoyance to the sounds. At the same A-weighted sound pressure level, wind turbine noise was found to be associated with higher annoyance than road traffic noise, particularly with amplitude modulation. The increased annoyance to amplitude modulation of wind turbines is not related to its periodicity, but seems to depend on the modulation frequency range. The study discloses a direct link of different acoustic characteristics to annoyance, yet the generalizability to long-term exposure in the field still needs to be verified.

Journal of the Acoustical Society of America 2016 May;139(5):2949.
doi: 10.1121/1.4949566.

Beat Schäffer, Reto Pieren, Kurt Heutschi
Laboratory for Acoustics/Noise Control, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
Sabine J. Schlittmeier, Ralf Graf, and Jürgen Hellbrück
Work, Environmental, and Health Psychology, Catholic University of Eichstätt-Ingolstadt, Eichstätt, Germany
Mark Brink
Noise and NIR Division, Federal Office for the Environment, Bern, Switzerland

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