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Resource Documents: Sweden (26 items)
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Indoor Measurements of Noise at Low Frequencies – Problems and Solutions
Author: Pedersen, Steffen; Møller, Henrik; and Persson Waye, Kerstin
ABSTRACT: Due to standing waves, the sound pressure level within a room may vary as much as 20-30 dB at low frequencies. Principal properties of low-frequency sound in rooms are illustrated by simulations, and sound pressure distributions as well as the performance of Swedish and Danish measurement methods are studied by measurements in three rooms. For assessment of annoyance, mainly areas of the room with high sound pressure levels are of interest, since persons present in such areas are not . . .
More »Amplitude modulation of sound from wind turbines under various meteorological conditions
Author: Larsson, Conny; and Öhlund, Olof
Abstract Wind turbine (WT) sound annoys some people even though the sound levels are relatively low. This could be because of the amplitude modulated “swishing” characteristic of the turbine sound, which is not taken into account by standard procedures for measuring average sound levels. Studies of sound immission from WTs were conducted continually between 19 August 2011 and 19 August 2012 at two sites in Sweden. A method for quantifying the degree and strength of amplitude modulation (AM) is introduced . . .
More »Human perception of sound from wind turbines
Author: Pedersen, Eja; Forssén, Jens; and Persson Waye, Kerstin
Summary The erection of wind turbines is preceded by an environmental assessment of the impact of wind turbines on people living nearby. One impact to be assessed is sound. It is thus important to have scientifically based knowledge of how wind turbine sound will be perceived in order to ensure that this sound does not adversely affect the health of residents in the area. This report presents an analysis of the results from two previous field studies investigating the relation . . .
More »Health aspects associated with wind turbine noise – results from three field studies
Author: Pedersen, Eja
Wind farms are a new source of environmental noise. The impact of wind turbine noise on health and well-being has not yet been well-established and remains under debate. Long-term effects, especially, are not known, because of the short time wind turbines have been operating and the relatively few people who have so far been exposed to wind turbine noise. As the rate of new installations increases, so does the number of people being exposed to wind turbine noise and the . . .
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