'I suggest that with respect to the description of wind turbine noise it is a matter of terminology that needs a shift as follows: The language should be pulsations at an infrasound rate. Modulation of the entire signal at an infrasound rate. (Zwicker and Fastl call this fluctuation as a sensation detected by the ear). AM is present as some discrete low frequencies modulated at the bpf. UK method of AM is determining the modulation index of the fluctuating signal (not technically AM). You can determine the Modulation Index of the low frequency noise that is AM.' -Steven Cooper.
November 6, 2019 By Sherri Lange-Master Resource Source: https://www.masterresource.org/wind-turbine-noise-issues/sensing-not-hearing-cooper-qa-1/ Congratulations to Steven Cooper on his appointment to the European Acoustics Association Technical Committee on Noise, as the group leader on wind turbine noise, and on presenting three papers at the International Congress on Acoustics in Germany. ~DeFrock. “But wind turbine noise issues are not just … Continue reading ‘Sensing but not Hearing’: Steven Cooper On Wind Turbine Nuisance-Part 1.
Bald Hills Wind Farm Summary Report (45.04 MB) [alt. link] 'The monitoring program confirms that sound levels were exceeded, and sleep disturbance, intrusive noise and nuisance conditions existed at the homes of the persons involved during this monitoring program:' p.8.
Source: Posted on June 19, 2019 by newsdesk Photo: stock image. Flinders University researchers are investigating the effects on human sleep of noise emissions from wind farm turbines. Audible and potentially annoying indoor low-frequency noise from a wind farm is present for about 16% of the time at distances up to 3.5km, field data recorded in South Australia … Continue reading Wind Farm Noise Recorded Almost 9km Away