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: Results proved that urban planning must be made with some logical considerations regarding sound propagation and amplification mechanisms in order to improve the comfort and people wellbeing in future developments.
17 citations
TL;DR: There may be positive associations between occupational noise and hypertension and impaired hearing, but no conclusion can be drawn between occupational noise and ECG.
Abstract: For
the past few years, noise pollution has been more and more serious, and it may
lead to several diseases. While the humans expose to noise in quantity for a
long time, their blood pressure will change, and even cause changes in cardiac
function. In our study, we attempt to find the relationship between
occupational noise and hypertension and impaired hearing, cardiac function. It
may be helpful to obtain some useful information on occupational noise exposure
of humans. The participants were divided into noisy group ≥90 dB (A) and
non-noisy group ≤70 dB (A). We performed this research in an automobile manufacturing
company of Chongqing, China during 2011-2012. Our study showed that there may
be positive associations between occupational noise and hypertension and impaired hearing,
but no conclusion can be drawn between occupational noise and ECG.
17 citations
15 Feb 2018
TL;DR: In this paper, an analysis of data from 1,582 ships reveals that half of the total power radiated by a modern fleet comes from just 15% of the ships, namely those with source levels above 179 dB re 1 μPa @ 1 m.
Abstract: Underwater noise pollution from ships is a chronic, global stressor impacting a wide range of marine species. Ambient ocean noise levels nearly doubled each decade from 1963-2007 in low-frequency bands attributed to shipping, inspiring a pledge from the International Maritime Organization to reduce ship noise and a call from the International Whaling Commission for member nations to halve ship noise within a decade. Our analysis of data from 1,582 ships reveals that half of the total power radiated by a modern fleet comes from just 15% of the ships, namely those with source levels above 179 dB re 1 μPa @ 1 m. We present a range of management options for reducing ship noise efficiently, including incentive-based programs, without necessarily regulating the entire fleet.
17 citations
01 Jan 2013
TL;DR: In this article, the authors used different noise mapping methods for determining the distribution of noise in industrial hall of an industrial factory, sampling was carried out in 6×6 m grid and the variogram was developed.
Abstract: Received: September 2013, Accepted: January 2013 Background: Noise pollution and workers' noise exposure are common in industrial factories in Iran. In order to reduce this noise pollution, evaluation and investigation of noise emission are both necessary. In this study, different noise mapping methodsare used for determining the distribution of noise. Materials and Methods: In the present study, for preparing a noise map in a hall of an industrial factory, sampling was carried out in 6×6 m grid. After data normalization the variogram was developed. For interpolation of mentioned parameter, kriging and Inverse Distance Weighting methods were used. The best model for interpolation was selected by cross validation and error evaluation methods, such as Route Mean Square Error(RMSE). Results: The results showed that kriging method is better than other methods for prediction of noise property. The noise map was prepared, using the best interpolation method in Geographical Information System environment. Conclusion: Workers in this industrial hall were exposed to noise which is mainly induced by noisy machines. Noise maps which were produced in this study showed the distribution of noise and, also revealed that workers suffer from serious noise pollution.
17 citations
TL;DR: The exposure-response relationship was derived between LAeq outdoors and the indoor noise annoyance and was in rather good agreement with two previous studies involving much smaller turbines (0.15-1.5 MW) under 40 dB LAeq.
Abstract: The existing exposure–response relationships describing the association between wind turbine sound level and noise annoyance concern turbine sizes of 0.15–3.0 MW. The main purpose of this study was to determine a relationship concerning turbines with nominal power of 3–5 MW. A cross-sectional survey was conducted around three wind power areas in Finland. The survey involved all households within a 2 km distance from the nearest turbine. Altogether, 429 households out of 753 participated. The households were exposed to wind turbine noise having sound levels within 26.7–44.2 dB LAeq. Standard prediction methods were applied to determine the sound level, LAeq, in each participant's yard. The measured sound level agreed well with the predicted sound level. The exposure–response relationship was derived between LAeq outdoors and the indoor noise annoyance. The relationship was in rather good agreement with two previous studies involving much smaller turbines (0.15–1.5 MW) under 40 dB LAeq. The Community Tolera...
17 citations