Topic
Noise barrier
About: Noise barrier is a research topic. Over the lifetime, 1540 publications have been published within this topic receiving 10810 citations. The topic is also known as: soundwall & noise wall.
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TL;DR: In this paper, the effects of vegetation on the perception of sound using both real traffic sources and reproduced recorded traffic noise were investigated and it was shown that on average listeners were more sensitive to noise when the source was visually screened.
80 citations
TL;DR: The research described in this paper aims at improving visualization and assessment of noise impact on the environment by generating a 3D noise map in cases where 3D effects are relevant, i.e. in urban areas.
Abstract: Noise mapping is the process of determining and visualizing noise impact on the environment in order to support environmental policies. Currently most noise impact studies are based on a 2D approach. The 3D output of noise simulation software is processed and visualized in 2D and combined with 2D topographical and other data, such as population distribution, to quantify the effects. The research described in this paper aims at improving visualization and assessment of noise impact on the environment by generating a 3D noise map in cases where 3D effects are relevant. Based on the specific demand, an approach is presented to generate a 3D noise map as a basis for noise impact studies. The proposed concept is proofed by applying it to a sample noise impact study. From experiences with the sample, it can be concluded that the 3D noise map offers significant insight in situations where 3D noise effects are relevant, i.e. in urban areas. Here, current 2D noise maps have limitations. In addition, more accurate assessment of noise impact is possible in particular when different floors of a building close to the noise source and/or behind noise barriers are considered. This paper also elaborates on accuracy aspects in all phases of noise modelling, including a presentation of initial experiments of 3D noise interpolation.
80 citations
TL;DR: A critical survey of the identification and modelling of railway noise sources is presented in this article, which summarizes the current knowledge of the physical source phenomena (mainly rolling and aerodynamic sources) as well as the potential for noise reduction.
79 citations
TL;DR: In this paper, the authors assess the impact of road traffic noise in suburban areas during evening and night time periods and find that annoyance is greater in flats where all windows have a direct view of the main road than in those where several windows do not have direct view, while age, gender, and home ownership have no statistically significant effect on the noise annoyance of residents at the same noise level.
77 citations
TL;DR: In this article, the authors investigated the effect of roadside noise barriers on ambient particulate matter (PM) and co-pollutants in areas adjacent to busy roadways and found that the presence of roadside barriers may impact the decay of pollutant concentrations downwind of the freeway by limiting the initial dispersion of traffic emissions and increasing their vertical mixing.
74 citations