Resource Documents: Noise (602 items)
Documents presented here are not the product of nor are they necessarily endorsed by National Wind Watch. These resource documents are provided to assist anyone wishing to research the issue of industrial wind power and the impacts of its development. The information should be evaluated by each reader to come to their own conclusions about the many areas of debate.
On our analysis, a number of propositions emerge from the medical and scientific evidence. Some of those propositions had unanimous support by the relevant experts, and others had the support of most. The propositions which we understand have unanimous support from the relevant experts or are not contested include the following: Wind turbines emit sound, some of which is audible, and some of which is inaudible (infrasound); There are numerous recorded instances of WTN exceeding 40 dB(A) (which is a . . .More »
Abstract – The unsteady nature of wind turbine noise is a major reason for annoyance. The variation of far-field sound pressure levels is not only caused by the continuous change in wind turbine noise source levels but also by the unsteady flow field and the ground characteristics between the turbine and receiver. To take these phenomena into account, a consistent numerical technique that models the sound propagation from the source to receiver is developed. Large eddy simulation with an actuator . . .More »
Abstract – Almost without hesitation, most people can identify a sound that is annoying to them, whether it might be fingernails on a chalkboard, a barking dog late at night, a mosquito buzzing in their ear, or their own particular example. Classic acoustics texts identify key points related to annoyance. These “special characteristics of noise” include tonality, a non-random cyclical nature, pitch, roughness, rise time, and dominance of noise during sleeping hours when environmental noises diminish. A new source of . . .More »
Requested by Stockyard Hill Landscape Guardians – I have used my previous clinical experience as a rural General Practitioner to interview individuals reporting adverse health effects from a range of industrial noise sources, and then used the information obtained together with my clinical insights and experience, to collaborate with trained health and acoustics professionals in Australia and internationally to plan and implement new multidisciplinary research methodologies and develop new acoustic instrumentation, to facilitate accurate measurement and recording of acoustic exposures, and . . .More »