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Resource Documents by Schäffer, Beat

Schäffer, Beat; et al.
How do audio and visual characteristics of wind turbines contribute to noise annoyance?
ABSTRACT— Wind farms often evoke strong annoyance reactions in residents. Literature suggests that both acoustical characteristics and the visibility of wind turbines may contribute to noise annoyance. However, studies on the mutual audio-visual effects on annoyance are still rare. The objective of this study was to investigate the short-term noise annoyance reactions to different wind turbine noise situations in a controlled laboratory experiment. A set of 24 audio-visual rural scenarios containing a single wind turbine was synthesized, i.e., visualized and . . . Complete article »

Schäffer, Beat; et al.
Effects of Different Spectral Shapes and Amplitude Modulation of Broadband Noise on Annoyance Reactions in a Controlled Listening Experiment
Abstract: Environmental noise from transportation or industrial infrastructure typically has a broad frequency range. Different sources may have disparate acoustical characteristics, which may in turn affect noise annoyance. However, knowledge of the relative contribution of the different acoustical characteristics of broadband noise to annoyance is still scarce. In this study, the subjectively perceived short-term (acute) annoyance reactions to different broadband sounds (namely, realistic outdoor wind turbine and artificial, generic sounds) at 40 dBA were investigated in a controlled laboratory listening . . . Complete article »

Schäffer, Beat; et al.
Short-term annoyance reactions to stationary and time-varying wind turbine and road traffic noise
[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 . . . Complete article »

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