Topic
Noise pollution
About: Noise pollution is a research topic. Over the lifetime, 4455 publications have been published within this topic receiving 67192 citations.
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TL;DR: It is revealed that mean noise level in “residential and commercial areas” was highest relative to the other land-use types, and minimum and maximum values of noise pollution were recorded during the mid-day and evening hours, regardless of the land-uses.
Abstract: This study aimed at quantifying noise pollution from urban traffic in the city of Kahramanmaras, Turkey. A total of 114 measurements for the equivalent noise level (LAeq) were made at 38 urban locations classified as “residential areas”, “residential and commercial areas” and “industrial areas” according to the national regulations, during morning, mid-day and evening hours. Our findings tabulated and mapped revealed that mean noise level in “residential and commercial areas” was highest relative to the other land-use types. Minimum and maximum values of noise pollution were recorded during the mid-day and evening hours, regardless of the land-use types. Noise limit values were exceeded at two locations only out of 38 based on the national regulation criteria and at over half of the locations based on the international criteria.
58 citations
02 Oct 1988
TL;DR: The major source of noise in an ASD (adjustable-speed drive) is the excitation of the motor by nonsinusoidal currents, and ASDs based on induction motors, permanent-magnet motors, and switched reluctance motors have been examined for correlation between current and acoustic noise.
Abstract: AC adjustable-speed drives (ASDs) are finding increased opportunities for applications in which acoustic noise is a major consideration for acceptability. The major source of noise in an ASD is the excitation of the motor by nonsinusoidal currents. For load characteristics that simulate the performance required for fans and compressors, ASDs based on induction motors, permanent-magnet motors, and switched reluctance motors have been examined for correlation between current and acoustic noise. The effects that the specific types of noise produced by drives have on human subjects is examined with regard to temporary and permanent hearing-threshold shifts. >
58 citations
TL;DR: In this article, the authors describe an optimisation study concerning arrival trajectories that has been conducted using a recently developed tool for the analysis and design of noise abatement procedures around airports, which combines a noise model, a geographic information system, and a dynamic trajectory optimisation algorithm.
Abstract: This paper describes an optimisation study concerning arrival trajectories that has been conducted using a recently developed tool for the analysis and design of noise abatement procedures around airports. This new tool combines a noise model, a geographic information system, and a dynamic trajectory optimisation algorithm. The optimisation algorithm generates routings and flight-paths that minimise the noise impact in the residential communities surrounding the airport, while satisfying all imposed operational and safety constraints. The study on arrival trajectories presented herein complements an earlier study involving departure trajectories. Although the numerical results shown pertain to a particular example airport, viz Amsterdam Airport Schiphol, the study actually focuses on the development of a generic methodology that could be applied to any given airport. The results clearly demonstrate the effectiveness and flexibility of the developed tool.
58 citations
TL;DR: In this paper, the authors examined the relationship between urban built environment and noise, using Pearson correlations and multiple linear regressions, and found that the spatial layout of residential buildings is more effective in reducing noise level as compared to the size of residential lands.
58 citations
TL;DR: The non-auditory effects studied in the current work add to the risk factors associated with non communicable diseases and there is need to address the issue of noise pollution and associated health risks specially for vulnerable population.
58 citations