Wind-Induced Vegetation Noise. Part I: A Prediction Model
This paper describes a semi-empirical analytical model developed to predict ambient noise generated by vegetative sources during a windy day. The model is based on measurements carried out with vegetation samples placed in a flow. Typical noise spectra and the dependence of radiated noise on wind speed have been obtained for different tree species. Then, by using simplified representations of the interaction of the wind flow with the foliage, analytical expressions giving the acoustic power generated by different configurations (single tree, forest, forest edges, shelterbelt) have been derived. The influence of the vegetation cover and the ground reflection on the sound propagation is taken into account so that the sound pressure level can be predicted at an arbitrary point. The model shows that the generating mechanisms are different for coniferous trees and deciduous ones. In a subsequent paper, a series of measurements carried out in the field to calibrate and validate the model are presented.
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Document Type: Research Article
Publication date: March 1, 1999
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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