Journal of Mechanical Science and Technology

, Volume 30, Issue 10, pp 4503–4509 | Cite as

Effects of amplitude modulation on perception of wind turbine noise

  • Kiseop Yoon
  • Doo Young Gwak
  • Yeolwan Seong
  • Seunghoon Lee
  • Jiyoung Hong
  • Soogab LeeEmail author


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.


Amplitude modulation Wind turbine noises Detection threshold Subjective loudness 


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Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Kiseop Yoon
    • 1
  • Doo Young Gwak
    • 1
  • Yeolwan Seong
    • 2
  • Seunghoon Lee
    • 3
  • Jiyoung Hong
    • 4
  • Soogab Lee
    • 5
    Email author
  1. 1.AeroAcoustics and Noise Control Laboratory, Department of Mechanical and Aerospace EngineeringSeoul National UniversitySeoulKorea
  2. 2.Ammunition Engineering TeamDefense Agency for Technology and QualityDaejeonKorea
  3. 3.Aerodynamics Research TeamKorea Aerospace Research InstituteDaejeonKorea
  4. 4.Transportation Environmental Research Team, Green Transport & Logistics InstituteKorea Railroad Research InstituteUiwangKorea
  5. 5.Center for Environmental Noise and Vibration Research, Engineering Research Institute, Department of Mechanical and Aerospace EngineeringSeoul National UniversitySeoulKorea

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