Assessment of Environment Traffic Noise Pollution in Uvwie Local Government Area of Delta State, Nigeria.

2015 ◽  
Vol 11 (3) ◽  
pp. 3218-3223
Author(s):  
Esi Oghenevovwero E ◽  
Edomi Ovie
Keyword(s):  
Local Government ◽  
Traffic Noise ◽  
Noise Pollution ◽  
Sound Level ◽  
Local Government Area ◽  
Exposure Level ◽  
Road Traffic Noise ◽  
Afternoon Session ◽  
Sound Level Meter ◽  
Level Meter

The assessment of environmental traffic noise pollution in Uvwie local government area of Delta State, Nigeria was carried out using a well calibrated portable digital sound level meter (Model  CEL-231).  The sound level meter is an instrument used for measuring the exposure level of noise  in the field. The measurement was done three times/day (Morning session 9am – 10am, afternoon session 1pm – 2pm and Evening session 4pm – 5pm) and readings were taken. The mean results measured  from the studied area ranged from 74.61dB (A)  in the evening to 76.92dB (A)  in the afternoon with mean average of 76.66dB (A).The obtained mean values of traffic noise when compared with the permissible level for road traffic noise of 65 decibels dB (A) in commercial area during the Day time, it was observed that the  obtained mean level results exceeded the permissible standard  limit. These high values can be attributed to poor maintenance of the vehicles, indiscriminate usage of pressure horns and  present of heavy duty truck that load petroleum product and cargo containers from the Warri refinery and Warri port (Nigeria Port Authority) respectively. This study revealed that immediate health implication may not be observed at the present level, but long term health effects are probable in the nearest future.

ASSESSMENT OF ENVIRONMENT TRAFFIC NOISE POLLUTION IN UVWIE LOCAL GOVERNMENT AREA OF DELTA STATE, NIGERIA.

2016 ◽  
pp. 3218-3223
Author(s):  
Esi Oghenevovwero E1
Keyword(s):  
Local Government ◽  
Traffic Noise ◽  
Noise Pollution ◽  
Sound Level ◽  
Local Government Area ◽  
Exposure Level ◽  
Afternoon Session ◽  
Sound Level Meter ◽  
Mean Values ◽  
Level Meter

The assessment of environmental traffic noise pollution in Uvwie local government area of Delta State, Nigeria was carriedout using a well calibrated portable digital sound level meter (Model CEL-231). The sound level meter is an instrumentused for measuring the exposure level of noise in the field. The measurement was done three times/day (Morning session9am – 10am, afternoon session 1pm – 2pm and Evening session 4pm – 5pm) and readings were taken. The mean resultsmeasured from the studied area ranged from 74.61dB (A) in the evening to 76.92dB (A) in the afternoon with meanaverage of 76.66dB (A).The obtained mean values of traffic noise when compared with the permissible level for road trafficnoise of 65 decibels dB (A) in commercial area during the Day time, it was observed that the obtained mean level resultsexceeded the permissible standard limit. These high values can be attributed to poor maintenance of the vehicles,indiscriminate usage of pressure horns and present of heavy duty truck that load petroleum product and cargo containersfrom the Warri refinery and Warri port (Nigeria Port Authority) respectively. This study revealed that immediate healthimplication may not be observed at the present level, but long term health effects are probable in the nearest future.

Testing of Sonic-Absorbent Panels’ Behavior in Open-Air Environment

2012 ◽  
Author(s):  
Petru A. Pop ◽  
Patricia A. Ungur ◽  
Liviu Lazar ◽  
Mircea Gordan ◽  
Florin M. Marcu
Keyword(s):  
High Frequency ◽  
Noise Pollution ◽  
Sound Level ◽  
Sound Level Meter ◽  
Data Logger ◽  
Public Buildings ◽  
Gypsum Plaster ◽  
Level Meter ◽  
And Control

One wildly used method to reduce and control the noise pollution in green city’s buildings is using sonic-absorbent panels. Their applications can be multiple, such as the insulation of buildings, acoustic barriers and fences along the highway or in front of supermarkets, hospitals and other public buildings. This paper presents a method for testing the behavior of sonic-absorbent panels in open-air environment. The work represents a carrying on of previous research about absorbent materials from gypsum family, tested in lab conditions. The experiment setup used a dynamic installation and as a sample a stand formed by six sonic-absorbent panels from special modeling alpha-gypsum plaster. This installation has been composed of two loudspeakers for emitting the sound at a well-defined frequency by the first laptop, the microphone for detecting and transmitting the signal to the second laptop for analyzing and processing the data. All operations were performed using MATLAB Programs, while a Data Logger Sound Level Meter type CENTER 332 was put on near the microphone to compare both results. The first experiment of acoustic stand has been realized by setting up the installation at a frequency from 50 Hz to 1250 Hz and altering the distance between loudspeakers and stand at 0.5m to 1m and 1.5m, respectively. The second experiment kept the same test’s conditions, while two and three layers of sonic-absorbent panels formed the stand, respectively, but at same distance from source of 0.5 m. In both tests, the results underlined the good sonic-absorbent properties of these panels, especially at medium and high frequency, which can recommend using the panels for multiple outside applications.

scholarly journals Auditory and non-auditory health effects of noise exposure among people working near traffic junctions in Mysuru city, Karnataka

2020 ◽  
Vol 7 (4) ◽  
pp. 1427
Author(s):  
Sunil Kumar D. ◽  
Jose Jom Thomas ◽  
Prakash B. ◽  
Narayana Murthy M. R. ◽  
Sulochanadevi B. Chakrashali
Keyword(s):  
Health Effects ◽  
Noise Exposure ◽  
Traffic Noise ◽  
Health Effect ◽  
Noise Pollution ◽  
Sound Level ◽  
Occupationally Exposed ◽  
Level Meter ◽  
Study Participants ◽  
The City

Background: To assess the prevalence of health effects of noise exposure and the factors associated with it among people occupationally exposed to traffic noise in Mysuru city in Karnataka.Methods: A community based crossectional study was conducted for two months in Mysuru city in Karnataka. The sample size was calculated to be 280 and study participants were recruited from 70 selected locations in the city including all major traffic junctions with signal or traffic police control, covering all regions in the city. Four samples were assessed from each location by history taking and the ambient sound level was recorded from each location using a sound level meter. Data were entered in microsoft excel and analysed using SPSS version 22.Results: The prevalence of hearing loss among the study participants was 5.7% and 1.8% of people complained of tinnitus. Among the study participants, 8.9% had hypertension, 1.1% had cardiovascular disorders, 8.2% had sleeplessness, 6.4% had anxiety, 2.9% had irritability, and 5.7% reported a reduction working efficiency. The proportion of study participants with at least one health effect noise exposure was 26.07%. Only age group was significantly associated with the development of health effects among the exposed individuals.Conclusions: An alarming proportion of people working near traffic areas in Mysuru city are exposed to higher levels of noise and more than 25% of them show symptoms of auditory and/ or non-auditory health effects of noise pollution.

scholarly journals POTENSI VEGETASI SEBAGAI PEREDAM INGAR BUNYI KENDARAAN BERMOTOR

2019 ◽  
Author(s):  
KEMALA
Keyword(s):  
Noise Control ◽  
Traffic Noise ◽  
Quality Standard ◽  
Control Area ◽  
Sound Level ◽  
Noise Attenuation ◽  
Sound Level Meter ◽  
Research Focus ◽  
Vegetation Measurement ◽  
Level Meter

The increases of transportation everyday have made multiple effects especially for human heal th. Based on the effects appeared by noise, there were three steps could be done to prevent, to reduce, or to control it. First, noise control at the source of noise, second, noise control at the line, and third, noise control for the receiver (human). This research focus on noise control at the source of noise by plants. The purpose of this research was to investigate the traffic noise attenuation by vegetation. The noise was measured with Sound Level Meter and was taken at two areas, control area without vegetation and deal area with vegetation. Measurement was done in busy days and weekday in the morning, midday, and afternoon. The measurement repeated as many as three. The observation showed that the traffic noise in control area ranging from 77.3 -79.4 dBA, whereas in deal area traffic noise ranging from 56.3-59.4 dBA. In this case, vegetation could reduce the traffic noise as many as 20-21 dBA although the observation result over quality standard which defined by The Ministry of Environment no. 48/1996, that was 65 dBA for office and commerce (control area), and 55 dBA for housing and settlement (deal area).

Application of BP Neural Network in Traffic Noise Prediction

2012 ◽  
Vol 518-523 ◽  
pp. 3838-3842
Author(s):  
Gang Liu ◽  
Li Hua Lin ◽  
Rui Tian
Keyword(s):  
Neural Network ◽  
Bp Neural Network ◽  
Urban Areas ◽  
Road Traffic ◽  
Traffic Noise ◽  
Noise Pollution ◽  
Measured Data ◽  
Sound Level ◽  
Road Traffic Noise ◽  
Noise Prediction

A model of BP neural network for road traffic noise prediction was established by using some road traffic parameters in this paper. Then use this model to predict equivalent continual sound level of road traffic noise, After an overview about the neural approach, the learning; and production phase results are shown and contrasted with the measured data. They point out how good is the approach proposed to model noise pollution in urban areas.

scholarly journals Comparison of mathematical methods and measurements of traffic noise indices in pedestrian routes

2020 ◽  
Vol 20 (1) ◽  
pp. 351-364
Author(s):  
Guillermo Angel Perez Lopez ◽  
Léa Cristina Lucas de Souza
Keyword(s):  
Mathematical Models ◽  
Road Traffic ◽  
Traffic Noise ◽  
Pollution Index ◽  
Noise Pollution ◽  
Sound Level ◽  
Pollution Indices ◽  
Road Traffic Noise ◽  
Mathematical Methods ◽  
Vehicle Traffic

Abstract In this study, we propose an analysis of the vehicular traffic noise indices and comparison between field measurements and prediction data obtained from mathematical models. The study area consists of two pedestrians routes of a medium-sized South American city. University students use these routes in displacements between their universities and residences. We monitored twenty-eight points along the two routes, performing three daytime measurements for each point. The calculated values were obtained from two mathematical predicted models: the English model CRTN (Calculation of Road Traffic Noise) and the French model NMPB-Routes (Nouvelle Methode de Prevision de Bruit). The measurements considered two noise descriptors: the A-weighted equivalent sound level (LAeq) and the noise pollution index (Lnp). The results show that the pedestrians are exposed to excessive levels of vehicle traffic noise along these routes. However, the analysis showed that the two mathematical models achieved good similarity and high performance in the prediction potential. The CRTN model has a better performance than NMPB, proving to be useful as an auxiliary tool in the monitoring of vehicle traffic noise. Finally, we used the CRTN (LAeq) predictions to generate the map of noise pollution indices.

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 Evaluation of road traffic noise near tube-shaped bus rapid transit shelters

2021 ◽  
Vol 9 (72) ◽  
Author(s):  
Geanesson Alberto de Oliveira Santos ◽  
Eriberto Oliveira do Nascimento ◽  
Paulo Henrique Trombeta Zannin
Keyword(s):  
Noise Exposure ◽  
Road Traffic ◽  
Traffic Noise ◽  
Noise Pollution ◽  
Sound Level ◽  
Urban Traffic ◽  
Bus Rapid Transit ◽  
Road Traffic Noise ◽  
Rapid Transit ◽  
Noise Levels

Noise pollution is generally imperceptible, but it can cause various disorders, including psychological disorders, hearing loss and cardiovascular disease. Curitiba Municipal Law 10.625:2002 establishes upper limits of daytime noise exposure according to zoning areas and land use in the City of Curitiba. The purpose of this study was to evaluate noise immissions of urban traffic in the proximities of Bus Rapid Transit (BRT) shelters in Curitiba, Brazil. Daytime traffic noise levels were measured between 8am and 5pm near the entrance of these bus shelters in July and August 2014. Fifty-four measurement points at parks, residences, stores, schools, universities and hospitals in different zoning groups of the municipality were selected as a function of the type of population. The noise levels were recorded using a class I sound level meter. Brazil has no specific standard or law for traffic noise immissions, so the guidelines of the Brazilian standard ABNT NBR 10151:2000 were used. It was concluded that 74% of the measured noise levels varied from 70 to 76 dB(A). Only point 48, close to the Antônio Meireles Sobrinho BRT Shelter, was considered free of noise pollution. Traffic noise accounts for an overall average of 73 dB(A). A few bus shelters installed on the same street had an absolute average difference of 3 dB(A), while bus shelters located farther away from roads were the least noisy. The lowest average traffic noise levels, i.e., 71 dB(A), were recorded on roads for exclusive use by BRT buses.

scholarly journals The influence of a signal’s time structure on the perceived noise annoyance of road traffic noise

2021 ◽  
Author(s):  
Jan Felcyn
Keyword(s):  
Road Traffic ◽  
Temporal Structure ◽  
Traffic Noise ◽  
Sound Level ◽  
Time Structure ◽  
Common Source ◽  
Road Traffic Noise ◽  
Noise Annoyance ◽  
Modern Cities ◽  
Negative Feelings

Abstract Purpose Road traffic noise is the most common source of noise in modern cities. The noise indicators used to manage noise do not take into account its temporal structure. However, in cities the traffic flow varies during the day, peaking due to congestion and more fluent periods. In this research we sought to analyze how people (giving answers on a numerical ICBEN scale) perceive noise stimuli with the same LAeqT values but different time structures (more/less noise events, different amplitude envelopes). Methods 31 people with normal hearing took part in an experiment conducted in an anechoic chamber. Participants listened to 18 different noise recordings and rated each of them using the numerical ICBEN scale regarding noise annoyance. Results The results showed that only sound level was a statistically significant factor. However, based on people’s remarks about noise, we can also say that the more intermittent the noise is, the more negative feelings it evokes in people. Conclusions Time structure does not have a significant influence on people’s judgments about noise annoyance. However, people tend to have a preference for a steady noise rather than an intermittent one.

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