Urban Noise Recorded by Stationary Monitoring Stations

World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium - WMCAUS

土木建筑工程

Bkowski, Andrzej^1 ; Radziszewski, Leszek^1 ; Deký, Vladimir^2

Kielce University of Technology, Faculty of Mechatronics and Mechanical Engineering, Aleja Tysiclecia Pastwa Polskiego 7, Kielce

25314, Poland^1

University of ilina, Univerzitná 8215/1, ilina

010 26, Slovakia^2

关键词: A-weighted sound levels;    Coefficient of variation;    Coefficients of variations;    Comparative analysis;    Equivalent sound levels;    Monitoring stations;    Significance levels;    Standard deviation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/245/4/042045/pdf
DOI  :  10.1088/1757-899X/245/4/042045

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The paper presents the analysis results of equivalent sound level recorded by two road traffic noise monitoring stations. The stations were located in Kielce (an example of a medium-size town in Poland) at the roads in the town in the direction of Lód and Lublin. The measurements were carried out through stationary stations monitoring the noise and traffic of motor vehicles. The RMS values based on A-weighted sound level were recorded every 1 s in the buffer and the results were registered every 1 min over the period of investigations. The registered data were the basis for calculating the equivalent sound level for three time intervals: from 6:00 to 18:00, from 18:00 to 22:00 and from 22:00 to 6:00. Analysis included the values of the equivalent sound level recorded for different days of the week split into 24h periods, nights, days and evenings. The data analysed included recordings from 2013. The agreement of the distribution of the variable under analysis with normal distribution was evaluated. It was demonstrated that in most cases (for both roads) there was sufficient evidence to reject the null hypothesis at the significance level of 0.05. It was noted that compared with Lód Road, in the case of Lublin Road data, more cases were recorded for which the null hypothesis could not be rejected. Uncertainties of the equivalent sound level measurements were compared within the periods under analysis. The standard deviation, coefficient of variation, the positional coefficient of variation, the quartile deviation was proposed for performing a comparative analysis of the obtained data scattering. The investigations indicated that the recorded data varied depending on the traffic routes and time intervals. The differences concerned the values of uncertainties and coefficients of variation of the equivalent sound levels.