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Resource Documents: Noise (705 items)
(noise inside entry vestibule at midnight, 3 1.5-MW GE turbines 1500 feet downwind, Bliss, N.Y.)
Also see NWW press release on noise
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Acoustic Profiling of Infrasound and Audible Emissions from Wind Turbines: Field Measurements in Northern Sweden
Author: Ängskog, Per; Tatar, Kourash; and Chilo, José
Wind turbines produce both audible noise and low-frequency infrasound (below 20 Hz), which, though often inaudible, may have physiological and psychological effects that require further investigation. Previous studies confirm that wind turbines are significant sources of both audible and infrasonic noise. Infrasound is primarily generated by blade-tower interactions and atmospheric turbulence. Sugimoto et al. demonstrated a strong correlation between infrasound levels and rotor speed, highlighting the need for sensitive measurement systems capable of detecting frequencies below 1 Hz. Pierzga and . . .
More »How Do Residents Experience Wind Turbine Noise? The Results of a Two-Year Study
Author: Koppen, Erik; Ekelschot-Smink, Madelon; and Boon, Jaap
Noise from wind turbines is often a significant concern for nearby residents. To better understand the actual impact of wind turbine noise, an interactive app was utilized across several wind projects, allowing residents to easily report their real-time experiences with turbine noise. One such project involves 26 wind turbines in the Netherlands, grouped into three geographically separated clusters, spread over a 26-kilometre stretch along a busy motorway. For two years, starting from the turbines’ initial operation, residents could report noise-related . . .
More »Perceived Noise Impact of Transitioning Towards Larger Wind Turbines Using Auralisations
Author: Pockelé, Josephine Siebert; and Merino-Martinez, Roberto
The human perception of two wind turbines of different sizes, a small NTK turbine and a larger NREL model, was evaluated through their synthetically auralised sound. A wide range of wind speed conditions and observer locations was considered. The simulated sounds were analyzed using equivalent sound pressure levels and psychoacoustic sound quality metrics. Moreover, listening experiments were conducted to evaluate the human response to the same sounds. The least-squares models fitted to the results provided scaling laws for the different . . .
More »Wind turbine infrasound propagation over long distance
Author: Crozier, Steven
Infrasound with large peak to trough blade pass harmonics in two houses between three large wind turbine farms (WTFs) on the northwest coast of Norway, two single health cases, and a health survey near the WTF in Tysvær, Norway. In late 2019 I was contacted by concerned citizens on the neighbouring island of Hitra, where Norway’s first full scale WTF Hitra 1 with 24 Siemens SWT 2.3 CS turbines with 5.800m² sweep areas had been in commission since 2004. It . . .
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