Effects of amplitude modulation on perception of wind turbine noise
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Wind turbine noise is considered to be easily detectable and highly annoying at relatively lower sound levels than other noise sources. Many previous studies attributed this characteristic to amplitude modulation. However, it is unclear whether amplitude modulation is the main cause of these properties of wind turbine noise. Therefore, the aim of the current study is to identify the relationship between amplitude modulation and these two properties of wind turbine noise. For this investigation, two experiments were conducted. In the first experiment, 12 participants determined the detection thresholds of six target sounds in the presence of background noise. In the second experiment, 12 participants matched the loudness of modified sounds without amplitude modulation to that of target sounds with amplitude modulation. The results showed that the detection threshold was lowered as the modulation depth increased; additionally, sounds with amplitude modulation had higher subjective loudness than those without amplitude modulation.
KeywordsAmplitude modulation Wind turbine noises Detection threshold Subjective loudness
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- R. H. Bakker, E. Pedersen, G. P. van den Berg, R. E. Stewart, W. Lok and J. Bouma, Impact of wind turbine noise on annoyance, self-reported sleep disturbance and psychological distress, Sci. Total Environ., 425 (2012) 42–51.Google Scholar
- Y. Seong, S. Lee, D. Gwak, Y. Cho, J. Hong and S. Lee, An experimental study on annoyance scale for assessment of wind turbine noise, J. Renew. Sustain. Energy, 5 (2013).Google Scholar
- B. C. J. Moore, B. R. Glasberg and T. Bear, Model for prediction of thresholds, loudness and partial loudness, J. Aud. Eng. Soc., 45 (1997) 224–240.Google Scholar
- B. R. Glasberg and B. C. J. Moore, Development and evaluation of a model for prediction the audibility of timevarying sounds in the presence of background sounds, J. Audio Eng. Soc., 53 (2005) 906–918.Google Scholar
- B. C. J. Moore and B. R. Glasberg, A revision of Zwicker’s loudness model, Acta Acustica., 82 (1996) 335–345.Google Scholar
- B. R. Glasberg and B. C. J. Moore, A model of loudness applicable to time-varying sounds, J. Audio Eng. Soc., 50 (2002) 331–342.Google Scholar
- World wind energy report 2010, Reports of the World Wind Energy Association, WWEA (2011).Google Scholar
- K. Yoon, D. Gwak, S. Lee and S. Lee, The effect of amplitude modulation on the detection threshold of wind turbine noise, Proceedings of the 4th Asia-Pacific Forum on Renewable Energy, AFORE, Yeo-su, Republic of Korea (2015).Google Scholar