Creating sound immission mimicking real-life characteristics from a single wind turbine
Journal article, 2019

This paper describes a method to synthesise wind turbine sounds to be used in sleep studies using a parameter-based synthesis. The parameter values were determined using recordings of several types of operating wind turbines, thorough investigations of the recorded sounds, previous reports on wind turbine sound characteristics, and acoustic knowledge on how sound properties change from source to an outdoor receiver. The different wind turbine types are shown in the paper to have characteristic amplitude modulation (AM) spectra, with different AM strengths in different 1/3 octave bands. The statistical levels of the AM are evaluated and the correlation between A-weighted AM and AM in individual 1/3 octave bands is evaluated using linear regression. Method tests of the proposed synthesis technique show that it performs well and that wind turbine sound signals that include arbitrary AM spectra can be created. The work was part of the research project WiTNES (Wind Turbine Noise Effects on Sleep).

Wind turbine noise

Sleep study

Amplitude modulation

Author

Pontus Thorsson

Chalmers, Architecture and Civil Engineering, Applied Acoustics

Kerstin Persson Waye

University of Gothenburg

M. Ögren

University of Gothenburg

Michael Smith

University of Pennsylvania

University of Gothenburg

Eja Pedersen

Lund University

Jens Forssén

Chalmers, Architecture and Civil Engineering, Applied Acoustics

Applied Acoustics

0003-682X (ISSN)

Vol. 143 66-73

Physiological effects of wind turbine noise on sleep

Formas, 2013-11-12 -- 2017-12-31.

Subject Categories

Fluid Mechanics and Acoustics

Signal Processing

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1016/j.apacoust.2018.08.015

More information

Latest update

11/22/2019