scholarly journals Monitoring of Noise Levels at Various Sites During Winter Season at Bhindawas Wetland, Haryana, India

2015 ◽  
Vol 10 (3) ◽  
pp. 807-812 ◽  
Author(s):  
Sunil Kumar ◽  
Rajesh Dhankhar
Keyword(s):  
Noise Level ◽  
Winter Season ◽  
Noise Pollution ◽  
Sound Level ◽  
Past Century ◽  
Noise Levels ◽  
Natural Ecosystems ◽  
The Road ◽  
The Past ◽  
Central Pollution Control Board

Noise pollution has increased over the past century, especially the past few decades, disturbing the integrity of natural ecosystems. Higher noise level not only harms humans, but threatens the birds. It cause reduction of bird’s species, reproductive failure and affect food availability. A comprehensive study on noise level of three pre-selected sites of Bhindawas wetland was carried out during the November 2010 and February 2011. At each site, noise level measurements were made at ten second interval for a period of 60 minutes. Equivalent continuous sound level (Leq) ware ranged between 42.45 dB(A) to 55.66 dB(A) and 42.45 to 55.66 dB(A), respectively during the November 2010 and February 2011. It was observed that the road side site which is near to the canal water inlet to wetland has more noise level (Leq ) than the standard prescribed by the Central Pollution Control Board (CPCB) for a silence zone (50 dB). The higher values of the peak noise levels (L1) was observed during the study period, which could be disturbed the birds and they fly away to the nearest water bodies.

scholarly journals STUDY OF NOISE ON PASSENGER CAR SPEED

ASTONJADRO ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 195
Author(s):  
Syaiful Syaiful ◽  
Almas Fathin Irbah
Keyword(s):  
Growth Rate ◽  
Public Transport ◽  
Noise Level ◽  
Noise Pollution ◽  
Sound Level ◽  
Pollution Level ◽  
The Road ◽  
The Government ◽  
Level Meter ◽  
Motorized Vehicles

<p>Bogor Regency has an economic growth rate including the highest among cities and other districts around the Jakarta Capital Region. Regarding the condition of the vehicle population in Bogor district, the number of motorized vehicles in 2017 and 2018 experienced a growth of between 2% and 12%. In contrast to the growth rate of vehicles, the road growth rate is only 0.1% per year. Nurul Hidayah Mosque is located on Jalan Salabenda, the object of the author's research to find out how much influence the sound of motorized vehicles has on worship activities around the Nurul Hidayah mosque. In public transport car speed, motorcycle speed, and private car speed do not have a significant effect on the noise pollution produced. The noise level around the Nurul Hidayah Mosque, Jalan Salabenda Raya, Bogor Regency which has been measured the smallest is 56.4 dBA. This value exceeds the noise threshold of the Noise Level Standard Value for the Ministerial Decree, which is 55 dBA. So that it requires attention and cooperation from the government and the community to overcome the noise in the worship area. The calculation and analysis obtained is on the equation with the largest R Square value on the fourth day of the study, the third point (Sound Level Meter 3), with a contribution of 22.67%. Like the equation on the side, y = 73.251 + 0.004x<sub>1</sub>-0.311x<sub>2</sub>-0.003x<sub>3</sub>. The meaning of this equation is that if there is no decrease in the speed of motorbikes, private cars and public transport cars, the noise pollution level in SLM3 is 73,251 dBA. If there is an increase in the speed of public transport cars by 0.004, the decrease of motorbikes by 0.311, and an increase in the speed of private cars by 0.003, the noise pollution level will decrease by 0.31 dBA at SLM3.</p>

Effect of distance from road intersection on developed traffic noise levels

2004 ◽  
Vol 31 (4) ◽  
pp. 533-538 ◽  
Author(s):  
Saad Abo-Qudais ◽  
Arwa Alhiary
Keyword(s):  
Noise Level ◽  
Traffic Noise ◽  
Sound Level ◽  
Signalized Intersections ◽  
Environment Pollution ◽  
Noise Levels ◽  
The Road ◽  
Traffic Intersection ◽  
Noise Measurements ◽  
Level Meter

The main objective of this study was to evaluate the variation in traffic equivalent noise levels as distance from the road intersection increases. To achieve this objective, traffic volume and equivalent noise level were monitored at 40 signalized intersections in Amman, the capital of Jordan. An integrated sound level meter (ISLM) was used to measure 1 min equivalent noise level along all approaches of the evaluated intersections. A total of 3326 noise measurements were performed. The collected data were analyzed to evaluate the variation of noise levels as distance from the intersection increases. The results indicated that equivalent noise levels were significantly affected by distance from the signal stop line. The equivalent noise levels at distances 50 and 100 m from the intersection were found to be 1.5 to 2.0 dB less than those at 0 m. While at 200, 250, and 300 m from the intersection, the monitored equivalent noise levels were found to be 3.8 to 4 dB higher than that at 0 m. At distances farther than 250 m, the measured equivalent noise levels tend to keep constant value of equivalent noise level as distance increased.Key words: noise, traffic, intersection, environment, pollution.

scholarly journals Level of noise pollution at different locations in Tangail municipal area, Bangladesh

2014 ◽  
Vol 26 (1-2) ◽  
pp. 29-36 ◽  
Author(s):  
MMM Hoque ◽  
LK Basak ◽  
M Rokanuzzaman ◽  
Sajal Roy
Keyword(s):  
Noise Level ◽  
Noise Pollution ◽  
Heart Beat ◽  
Motor Vehicles ◽  
Noise Levels ◽  
High Noise ◽  
High Noise Level ◽  
The Road ◽  
Common Problems ◽  
Hospital Shopping

The study was carried out to ascertain the level of noise pollution at different locations in Tangail municipal area. For this purpose noise levels were measured at different locations at different periods of the day. At all the locations the level of noise were found to be higher than the acceptable level. The intensity of noise was found lower with increasing distance from the road side. The noise level on the main road near hospital, shopping center and bazars was above the standard level recommended by MoEF. From the survey motor vehicles were found as the main cause of high noise level. The most common problems with high noise level were found to increased heart beat, drowsiness, headache and hearing impairment. DOI: http://dx.doi.org/10.3329/bjsr.v26i1-2.20228 Bangladesh J. Sci. Res. 26(1-2): 29-36, December-2013

scholarly journals A comprehensive evaluation of the level of noise pollution in hospitals of Kermanshah University of Medical Sciences

2018 ◽  
Vol 20 (2) ◽  
pp. 363-367
Keyword(s):  
Noise Level ◽  
Comprehensive Evaluation ◽  
Noise Pollution ◽  
Hospital Staff ◽  
Time Of Day ◽  
Sound Level ◽  
International Standards ◽  
Noise Levels ◽  
Significant Difference ◽  
Average Noise Level

Noise pollution higher than the standard values intensifies the patients' disease and also has negative effects on hospital staff. This study aimed to determine the level of noise pollution in the Kermanshah hospitals and also to compare obtained data with national and international standards. Multifunctional sound level meter (Model CEL – 450), has been applied for determining the sound level in different parts of a hospital in 3 different time of day (morning, visiting hours (evening), and night) for working day and holiday. The highest level was on working days and it was 60.24±5.76 dB. The average noise level on holiday was 58.15±5.44 dB. Generally, the average noise level in all studied hospitals was higher than the standard levels. The results of the analyses showed that when the P=0.003, there’s a significant difference between the average noise levels on different days. According to the results of the studies, it is necessary to plan and take managerial and technical – engineering measures to reduce the noise levels to standard levels.

scholarly journals A Study of Some of the Indicators of Noise Pollution in Certain Residential Districts in Fallujah City

2021 ◽  
pp. 2571-2579
Author(s):  
Ahmed H. Ali ◽  
Mohammed M. Abed ◽  
Berivan H. Mahdi ◽  
Wassan D. Hussain ◽  
Aisar M. Mohaisen
Keyword(s):  
Noise Level ◽  
Noise Exposure ◽  
Heavy Traffic ◽  
Field Measurements ◽  
Noise Pollution ◽  
Sound Level ◽  
Noise Levels ◽  
Mean Values ◽  
Daily Average ◽  
Main Streets

     The aim of this study was to evaluate the effects of noise exposure in certain residential districts in Fallujah city. Twenty-nine stations were selected and divided into two groups; the first group was located 50 to 100 metres from the main streets (quiet areas), whilst the second was located directly on the main streets. Noise levels were measured at a rate of three readings per station for different time periods for approximately sixty days in the year 2020. Mean values were taken in both the morning and evening using a portable sound level meter (Auto range, RS-232). The highest noise level was measured at Alforkan station for the morning reading (83.8 dB) within the second group, while the lowest noise level was measured at Alshohada alawla district station for the morning reading (63.2 dB) within the first group. As for the results of the daily noise level in the evening, the highest daily average (79.4 dB) was measured at Jaish al Shabi street, while the lowest daily average (56.4 dB) was at Dor Alsekak district. The total average noise levels for the morning measurements for the first and second groups were 66.7 dB and 77.2 dB, respectively, whereas those for evening measurements were 65.3 dB and 71.7 dB, respectively. According to field measurements, the average values for the noise (traffic) for the first and second groups in the morning and afternoon exceeded 68 dB, which may cause people to feel very disturbed according to the WHO guidelines on exposure to external environmental noise. In general, all the results measured in this study are above the limits allowed both locally and internationally. This is due to certain erroneous practices in daily activities in addition to the irregular spread of electric generators and commercial activities as well as heavy traffic in the city.

scholarly journals The spatial (noise) prediction of the generator noise levels in E Mansouriya for the winter of 2015 in December and the summer of 2016 in May

2018 ◽  
Vol 227 (2) ◽  
pp. 197-218
Author(s):  
Asst. Dr. Nisreen Hadi Rasheed Al Karkhi
Keyword(s):  
Spatial Data ◽  
Noise Level ◽  
Spatial Scales ◽  
Noise Pollution ◽  
Research Area ◽  
Sound Level ◽  
Effect Of Temperature ◽  
Noise Levels ◽  
Search Area ◽  
Residential Neighborhood

The study dealt with the problem of noise pollution in most of the Iraqi cities, if not all, but the noise of generators in the center of Al Mansouriya area, which occupies an area of ​​331969 dunums and located in the northern part of the district of Khalis in Diyala province, 34.23) and between longitudes (44.39) and (45) east.This is due to the random distribution of the civil generators in the research area, as they were concentrated in the old neighborhood without any other residential neighborhood. This explains the reason for the rise in noise In the residential district and not compared to the population of the search area, reaching (19870) people for the year 2016 after it was (10338) for the year 2009. The study concluded that the maximum noise level was recorded at the birth site (14) with a noise level of (108.7db) for the summer of 2016, while the lowest noise level was at (17) with a noise level of 82.5 db for the winter of 2015, While the levels of noise increased significantly in the summer of 2016 compared to the winter of 2015. The researcher attributed this rise to the effect of temperature and speed and direction of wind in the search area, where the noise levels for the summer of 2016 ranged between (91.4db - 108.7db) , While the noise levels of the winter of 2015 ranged between (82.5db - 97.1db), exceeding the pain threshold for ear, hearing and (80.74bb) for the winter of 2015 and summer 2016. The research was based on the measurement of noise levels using the Digital sound level meter, Geostatistical Analyst In Arc map10.1, for the purpose of analyzing the spatial data of each site, and then extracting the spatial distribution map to generate the brightness of the raster generator sites, based on the measurements of each point of the eligibility generator in the Mansouriya area, With the sound The distance of 50 meters is considered as the program predicts the presence of noise in the generators and spatial scales closer to those distant from the monitoring source, indicating the chromatic gradient in the search maps

scholarly journals Assessment of Noise Pollution in Different Hatbazars of Butwal City, Rupandehi, Nepal

2017 ◽  
pp. 61-64
Author(s):  
Kamal Bahadur Rayamajhi
Keyword(s):  
Noise Level ◽  
Noise Pollution ◽  
Sound Level ◽  
Sound Level Meter ◽  
Specific Time ◽  
Noise Levels ◽  
Metropolitan City ◽  
Commercial Activities ◽  
Level Meter ◽  
Digital Sound

The study was carried out to ascertain the level of noise pollution at five different hatbazars (periodic markets) of Butwal Sub-Metropolitan city by using Dick Smith Digital Sound Level Meter Q 1362 in the specific time from 4:00 PM to 5:00PM in the month of June 2016 on a hatbazar day and a usual day. The result shows that the heighest Leq of 79.8 dB(A) was observed on hatbazar day at Butwal hatbazar. However, on non hatbazar day the highest Leq of 71.9 dB(A) was observed at Purano bus park hatbazar. The lowest Leq of 64.9 dB(A) and 54.6 dB(A) were respectively observed on hatbazar day and non hatbazar day at Majhagaun hatbazar. The study shows that the noise level was found to be higher on hatbazar day as compared to non hatbazar day in all sampling sites. The commercial activities, crowd of people, unnecessary advertisement of goods, blasting of horns increase noise levels in hatbazars.The Himalayan Physics Vol. 6 & 7, April 2017 (61-64)

scholarly journals Determination of Traffic Induced Noise Pollution and its Impact on City Dwellers in the Chittagong City Area

2018 ◽  
Vol 14 (8) ◽  
pp. 185
Author(s):  
Mohammad Nasir Uddin ◽  
Md. Shahidul Hoque ◽  
Muhammad Alamgir Islam
Keyword(s):  
Noise Level ◽  
Weighted Average ◽  
Noise Pollution ◽  
Sound Level ◽  
City Area ◽  
The Road ◽  
Average Value ◽  
Traffic Area ◽  
Average Maximum ◽  
The Government

Chittagong, the port city of Bangladesh, is one of the nosiest cities of the country. Extreme noise is very inimical for human health and environment. Noise pollution implies a discomfort and restlessness caused to humans by unwanted high intensity sound. Motorized traffic is one of the major sources of producing noise in Chittagong city. The present paper deals with determining the level of the noise pollution in Chittagong city area and its impact on city dwellers. In this study noise levels have been measured with digital sound level meter at eight different places of Chittagong city from 6:00 am to 9:00 pm during working days. Time weighted average noise level has been measured at the road side. The data have been analyzed to compute the average, maximum and minimum noise level in decibel (dB) with respect to traffic volume. From the study it was observed that the highest noise level in the road side in Chittagong city was 112 dB found at New Market and 2 No gate traffic area, which for exceeded the acceptable limit of 60 dB set by the Government of Bangladesh and minimum sound level 67 dB was recorded at GEC traffic area. The highest average value is 109.66 dB found at 2 No gate traffic area and lowest average value is 68.7 dB found at GEC traffic area. Questionnaire survey was done during the study to determine the health impact on the city dwellers. Most of the common problems, the dwellers suffering from noise pollution are headache, bed temper, sleeplessness, aggravation, hearing problems etc.

Effective splicing localization based on noise level inconsistencies

2021 ◽  
pp. 1-11
Author(s):  
P. N. R. L. Chandra Sekhar Author ◽  
T. N. Shankar Author
Keyword(s):  
Digital Technology ◽  
Social Networking Sites ◽  
Noise Level ◽  
Research Work ◽  
Multimedia Content ◽  
Noise Levels ◽  
Multimedia Forensics ◽  
The Past ◽  
Photo Editing ◽  
State Of Art

In the era of digital technology, it becomes easy to share photographs and videos using smartphones and social networking sites to their loved ones. On the other hand, many photo editing tools evolved to make it effortless to alter multimedia content. It makes people accustomed to modifying their photographs or videos either for fun or extracting attention from others. This altering brings a questionable validity and integrity to the kind of multimedia content shared over the internet when used as evidence in Journalism and Court of Law. In multimedia forensics, intense research work is underway over the past two decades to bring trustworthiness to the multimedia content. This paper proposes an efficient way of identifying the manipulated region based on Noise Level inconsistencies of spliced mage. The spliced image segmented into irregular objects and extracts the noise features in both pixel and residual domains. The manipulated region is then exposed based on the cosine similarity of noise levels among pairs of individual objects. The experimental results reveal the effectiveness of the proposed method over other state-of-art methods.

Noise Pollution in Onitsha Metropolis: Challenges and Solution

2021 ◽  
Vol 1 (2) ◽  
pp. 032-040
Author(s):  
Chris Onyeka Ekweozor ◽  
Johnbosco Emeka Umunnakwe ◽  
Leo O Osuji ◽  
Vincent C Weli
Keyword(s):  
State Government ◽  
Noise Level ◽  
Control Point ◽  
Noise Pollution ◽  
Health Impact ◽  
Dry Season ◽  
Noise Levels ◽  
Wet Season ◽  
High Noise ◽  
Anambra State

This study evaluated noise pollution in Onitsha metropolis, Anambra State, Nigeria in 2019. Noise levels were measured at forty sampling stations in the morning, afternoon and night within the study area for dry and wet seasons using modern noise level instruments. A control point was established at ldeani/Nnobi Junction with coordinates N 06o 05’.282’’ E 006o 55’.891’’ which was used as a reference point and for comparison with the sound levels recorded in designated locations. The results showed that the maximum noise level in the study area exceeded the Federal Ministry of Environment (FMEnv) limit by 7.8% in the dry season and by 13.11% in the wet season. Noise LAeq exceeded the NESREA LAeq limit by 29.89% in the dry season and by 33.44% in the wet season. The study indicated that the mean noise levels in the dry and wet seasons were within FMEnv limit of 90dB .It also showed that high noise levels were recorded around major junctions and market places within Onitsha, which are harmful to public health. The study further showed that transportation activities and trading activities at the market places are the main sources of high noise levels in the study area. Health impact assessment should be conducted in Onitsha metropolis for residents. State government should enforce compliance laws and regulate the activities of industries in the areas.

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