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Journal of Environmental Engineering and Landscape Management, 2012 Now, it is normally agreed that noise barriers – shields with appropriate devices on the top edge – limit the diffraction of sound waves more effectively than the usual shields of the equal or in some cases even greater height.
Žilvinas Venckus +2 more
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Combined acoustical and economical noise barrier optimization using genetic algorithms
Građevinar, 2019 This paper studies noise barrier optimization using the Boundary Element Method (BEM) as a numerical technique and Genetic Algorithms (GA). Noise barriers are optimised according to acoustical, technological and economical properties so as to obtain an ...
Antonio Petošić +3 more
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Nihon Kikai Gakkai ronbunshu, 2016 In this paper, an adaptive robust feedback (FB) active noise control (ANC) system is proposed and applied to the previously developed active noise barrier (ANB) using a hybrid (HB) ANC system, which aims to relieve the indoor noise problem.
Xun WANG +3 more
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Performance of acoustic noise barriers in the Sayyad Shirazi highway in Tehran [PDF]
علوم محیطی, 2020 Introduction: Today, noise pollution is recognized as serious health and environmental problem. With the spread of urbanization and migration and the construction of roads, rails, and air transport networks, as well as the rapid development of the ...
Hadi Zahedi +2 more
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Study on the Thermal Environment Inside a Fully-Enclosed Subway Noise Barrier [PDF]
E3S Web of Conferences, 2020 The thermal environment inside a fully-enclosed subway noise barrier shall be designed according to underground section tunnel standards. This article constructs a model using practical examples, simulates calculations on fully-enclosed noise barrier ...
Liu Lei +3 more
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Noise prediction considering transmitted sound from noise barriers
Nihon Kikai Gakkai ronbunshu, 2019 In the noise prediction on railway viaducts by numerical acoustic analysis, it is premised that the noise barriers have sufficient sound insulation performance.
Daigo SATO, Akira OMOTO
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Effects of the Top Edge Impedance on Sound Barrier Diffraction
Applied Sciences, 2020 Sound barriers can be configured with different top edge impedance to improve their noise control performance. In this paper, the integral equation method was used to calculate the sound field of a barrier with various top edge impedance, and the effects
Xiaofan Huang, Haishan Zou, Xiaojun Qiu
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Investigation of the effect of a noise barrier on a railway track in the Kysuce region [PDF]
MATEC Web of Conferences, 2020 Purpose of the noise barriers is to create an acoustically sufficient impermeable obstacle located on the sound wave propagation path, thereby creating a shadow of the sound pressure level behind the barrier.
Pultznerová Alžbeta, Grenčík Juraj
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Speed Bumps Impact on Motor Transport Noise
The Baltic Journal of Road and Bridge Engineering, 2015 Most accidents are caused by excessive speed or aggressive driver behavior. One of the most popular speed regulation implement is speed bumps. However, there are some problems with speed bumps as well – it has been noticed that speed bumps increase motor
Tomas Januševičius, Rasa Akelaitytė
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, 2020 A full-size (1 × 5 m2) luminescent solar concentrator (LSC) has been constructed and the edge electric outputs from the attached photovoltaic cells monitored for a period of slightly over one year in the solar noise barrier (SONOB) “living lab” outdoor ...
Á. Bognár +7 more
semanticscholar +1 more source