Audibility of wind farm infrasound and amplitude modulated tonal noise at long-range locations

Nguyen, Phan Anh; Hansen, Kristy L.; Lechat, Bastien; Hansen, Colin H.; Catcheside, Peter; Zajamšek, Branko

doi:10.1016/j.apacoust.2022.109106

Cited by 3 publications

(5 citation statements)

References 19 publications

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“…The periodic variation in amplitude over time is called amplitude modulation, and listening tests have shown that the presence of amplitude modulation significantly increases the perceived level of annoyance for a given noise level. Thus, if a low-frequency noise is audible to the human body and still amplitude-modulated, it is likely to be more annoying [7,8].…”

Section: Introductionmentioning

confidence: 99%

Studies on the Experimental Measurement of the Low-Frequency Aerodynamic Noise of Large Wind Turbines

Wang,

Yan,

Zhao

et al. 2024

Energies

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With the continuous warming of the global climate, expanding the use of renewable energy has become one of the main social responsibilities. However, as the number of installed wind turbines and their physical dimensions continue to increase, the issue of generated noise has become increasingly significant in influencing the acceptance and endorsement of wind power projects by neighboring communities. In this paper, we investigated the noise generated by two wind turbine units with rated powers of 1.5 MW and 4.5 MW and analyzed the variations in low-frequency noise during their operation and shutdown periods. This research shows that the power of a single unit has a significant impact on the low-frequency noise emitted into the environment. Compared with 1.5 MW wind turbines, 4.5 MW wind turbines generate more low-frequency noise when operating at the same wind speed. Further analysis of the narrowband frequency spectra and one-third octave spectra of the measured noise indicates that the low-frequency noise from the 4.5 MW wind turbine increases significantly in the range of approximately 80 Hz to 300 Hz, with more pronounced variations below 250 Hz corresponding to changes in wind speed. However, the overall variations in low-frequency noise with wind speed are not as notable as those observed for the 1.5 MW wind turbine. Due to the relatively weak attenuation of low-frequency noise in the atmosphere, the higher low-frequency content of large wind turbines may cause more distress to residents near wind farms. The result of this study emphasizes that in the planning and design of wind power projects, in addition to considering the efficiency of single-unit power generation and the contribution of renewable energy, it is also necessary to pay full attention to noise emission issues to ensure that the project is widely supported and accepted in the community.

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Section: Introductionmentioning

confidence: 99%

Studies on the Experimental Measurement of the Low-Frequency Aerodynamic Noise of Large Wind Turbines

Wang,

Yan,

Zhao

et al. 2024

Energies

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“…For the humidity filtering, data was taken from the WIN SENT test site and from the wind farm location measurements close to the microphone. The exclusion criteria rainfall and rotational speed have already been applied in other studies [6,23,30].…”

Section: Am Detection With the Ioa Methodsmentioning

confidence: 99%

“…Several studies have shown that infrasound from WTs is below the human hearing and perception threshold at residential locations in 1 km distance [3][4][5]. Recently, Nguyen et al [6] confirmed that infrasound is most likely not audible to most people at distances larger than 1 km, whereas amplitude modulated WT sounds at higher frequencies may be audible to people at distances of up to 9 km from the wind farm.…”

Section: Introductionmentioning

confidence: 99%

Quantification of amplitude modulation of wind turbine emissions from acoustic and ground motion recordings

Blumendeller,

Gaßner,

Müller

et al. 2023

Acta Acust.

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Amplitude modulation (AM) is a common phenomenon associated with wind turbine (WT) related noise annoyance. Within the interdisciplinary project Inter-Wind, acoustic, ground motion, and meteorological data are captured to be evaluated with noise reports of residents living near a wind farm in Southern Germany. The recorded data builds a solid data base for the evaluation of AM. The occurrence of AM is detected within acoustic and ground motion data and set in relation to all available data, including WT operational parameters, meteorology, and noise reports. In this study, the origins of detected AM are tones at 57.8 Hz and 133 Hz, related to the generator and drive train, which are amplitude modulated by the blade passing frequency. AM detection was successful both with acoustic as well as ground motion data. A comparison of a method for AM detection developed by the Institute of Acoustics (IOA reference method) with a method specifically developed to detect AM in ground motion data showed that the reference method detected AM three to six times more often than the newly developed method. AM occurred most likely during stable atmospheric conditions, with a positive lapse rate, and was (albeit to a small degree) more likely to be detected when residents reported higher levels of annoyance.

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“…Nguyen i wsp. [58] przeprowadzili analizę rozkładów progów słuchu i wyników pomiarów HTW. Na tej podstawie uznali, że osoby z normalnym słuchem mieszkające w odległości >1 km od farmy wiatrowej nie powinny słyszeć infradźwięków.…”

Section: Problemy Zdrowotne U Osób Narażonych Na Infradźwięki I Hałas...unclassified

“…Na tej podstawie uznali, że osoby z normalnym słuchem mieszkające w odległości >1 km od farmy wiatrowej nie powinny słyszeć infradźwięków. W badaniach przeprowadzonych na jednej z farm w Południowej Australii wykazano jednak, że modulowane amplitudowo tony niskiej częstotliwości mogą być słyszane w odległości ≤9 km [58].…”

Section: Problemy Zdrowotne U Osób Narażonych Na Infradźwięki I Hałas...unclassified

Impact of infrasound and low frequency noise on human health and well-being. Part II: Review of epidemiological studies

Małgorzata,

Dudarewicz,

Myshchenko

et al. 2023

Med Pr Work Health Saf.

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Niniejsza praca podsumowuje dostępną wiedzę na temat wpływu infradźwięków i hałasu niskoczęstotliwościowego (HNcz) na zdrowie i samopoczucie ludzi. Podstawą tego narracyjnego przeglądu piśmiennictwa były wybrane, głównie recenzowane prace badawcze, artykuły poglądowe i metaanalizy opublikowane w latach 1971-2022. Uwagę skoncentrowano na wynikach badań epidemiologicznych dotyczących dokuczliwości przypisywanej infradźwiękom i HNcz, a także ich wpływowi na układ sercowo-naczyniowy i zaburzenia snu. Szczególną uwagę poświęcono także ostatnim wynikom badań i swoistym źródłom infradźwięków i HNcz, tj. turbinom wiatrowym.

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Audibility of wind farm infrasound and amplitude modulated tonal noise at long-range locations

Cited by 3 publications

References 19 publications

Studies on the Experimental Measurement of the Low-Frequency Aerodynamic Noise of Large Wind Turbines

Studies on the Experimental Measurement of the Low-Frequency Aerodynamic Noise of Large Wind Turbines

Quantification of amplitude modulation of wind turbine emissions from acoustic and ground motion recordings

Impact of infrasound and low frequency noise on human health and well-being. Part II: Review of epidemiological studies

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