The Institute of Acoustics has published its preferred method of measuring and rating amplitude modulation (AM) in wind turbine noise.
Known as the Reference Method, it is essentially a development of the Hybrid Reconstruction Method that was described in a discussion document published by the Institute’s Amplitude Modulation Working Group (AMWG) in April 2015.
The recommendation is contained in the working group’s final report, which follows a large-scale public consultation exercise that began with the publication of the discussion document.