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Annoyance caused by amplitude modulation of wind turbine noise  

Author:  | Noise

ABSTRACT:
A listening test has been performed to investigate the relationship between human annoyance and the amplitude modulation of wind turbine noise. To obtain sound samples for the listening test, sound from a 1.5 MW wind turbine in Korea was recorded. The strength of the amplitude modulation of the sound samples was defined in terms of the modulation depth spectrum, which was approximated by assuming that the sound samples are sinusoidally amplitude-modulated. The stimuli for the listening tests were created by reducing the modulation depth spectrum of the sound samples. A total of 30 participants were involved in the listening tests. The results of the listening tests indicate that the equivalent sound level and the amplitude modulation of wind turbine noise both significantly contribute to noise annoyance.

Noise Control Engineering Journal 59 (1), Jan-Feb 2011

Seunghoon Lee, Kyutae Kim
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Republic of Korea
Wooyoung Choi
Romax Technology Korea, Seochogu, Seoul, Republic of Korea
Soogab Lee
Institute of Advanced Aerospace Technology, School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Republic of Korea

Download original document: “Annoyance caused by amplitude modulation of wind turbine noise

This article is the work of the author(s) indicated. Any opinions expressed in it are not necessarily those of National Wind Watch.

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