Abstract The problem of noise pollution in Baghdad, the capital city Iraq, is getting worse every day as a result increased volume traffic. This presents considerable risk, particularly on main roads that connect densely populated neighborhoods such Al-Sadr City district with central capital. In order to inform decision-makers urban development and environmental policy about high values require...

Removing noise from images is a challenging problem in digital image processing. This paper presents an image denoising method based on a maximum a posteriori (MAP) density function estimator, which is implemented in the wavelet domain because of its energy compaction property. The performance of the MAP estimator depends on the proposed model for noise-free wavelet coefficients. Thus in the wa...

background in many industries, noise is attributed as the most prevalent harmful agent threatening workers' health. geographic information system (gis) is an applicable surveying tool in civil engineering. but, the use of gis for noise and hearing loss screening seems to be partly a new approach. objectives this study aimed to apply gis in noise and hearing loss screening in the production hall...

Abstract Environmental noise prevention starts from strategic maps of main transport infrastructures and agglomerations. Graduated colors are representative the average levels produced in space by each individual source, or overall sum. Among their purposes, communication results to population has been most neglected. The present paper proposes predominance for first time environmental acoustic...

Background: Noise mapping in industry can be useful to assess the risks of harmful noise, or to monitor noise in machine rooms. Using GIS -based software for plot of noise maps in an indoor noisy work environment can be helpful for occupational hygienists to monitor noise pollution. Methods: This study was carried out in noisy packaging unit of a food industry in Ghazvin industrial zone, to ev...

original article   introduction: wind-turbine noise emission and its environmental impact are considerable issues nowadays. considering the importance of the issue, the purpose of this study was to prepare noise map and wind turbines sound characteristics on the largest wind farm of iran. method: this study was carried out in two phases:1) in order to prepare the daytime sound level (ld) noise ...