Road Model as a Noise Source

Authors: Janczur, R.; Walerian, E.; Czechowicz, M.

Source: Acta Acustica united with Acustica, Volume 95, Number 1, January/February 2009 , pp. 156-167(12)

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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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Abstract:

The paper presents the results of investigation of sound field on a building façade neighbouring a busy road. The investigation has been undertaken over a façade of a specific shape which can provide noise protection. The applied simulation programs allow control of accuracy in road modelling as a noise source and the surrounding propagation space. In this way the required agreement between the simulation and the field measurements could be obtained. The simulation involves the facade geometry and geometry of surrounding buildings, road geometry (number of lanes and their positions) and traffic structure (vehicle flow rates and their average speeds). In the programs vehicles moving over a road are modelled as omnidirectional point sources. With use of the PROP12 simulation program the role of vehicle mutual screening in road noise emission has been analysed.

Document Type: Research article

DOI: 10.3813/AAA.918137