Peer-reviewed articles 17,970 +


Romana Drasovean; Romica Cretu; Simona Condurache-Bota; Gabriel Murariu
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
This paper presents the degree of noise pollution in Braila. Braila is a city located in southeastern Romania. For this purpose, sound level measurements were performed in various important locations in this city. The monitoring took place between November 2019 and June 2020.
The measurements were performed using a professional digital acoustic sound level meter that can record sound values between 30dB-130dB. The sound level meter works with two frequency filters: “A” and “C”. “A” filter responds in the same way as the human ear to the increase and decrease of sound amplitude along the spectrum. “C” filter is suitable for uniform measurements without amplitude increase or amplitude decrease. “C” filter can measure the sound level for cars and engines. Both filters operate in the 31.3 Hz and 8 kHz range.
The series measured with Noise Logger Communication Tool sound level meter in the two frequency domains were represented as a boxplot. In all monitored areas, the average values recorded in A frequency range are significantly lower than those recorded in C frequency range. This is due to the presence in the environment of some sources of noise from road traffic which includes light and high-speed cars.
The data distribution is generally asymmetric to the left, with higher scores. After the establishment of the state of emergency caused by the spread of SARS-CoV-2 coronavirus, it is observed that the data distribution becomes asymmetric to the right, predominating the low values of the sound intensity level.
Using Anova program we analyzed the similarity between the noise series measured in the A and C frequency range. For this purpose, Pearson coefficients also were calculated.
[1] Nistor E., Arghir M., Sound Pollution, The XI-th ”Dorin Pavel” National multidisciplinary Conference Conferin?a Na?ionala multidisciplinara ”Profesorul Dorin Pavel”, Romania, 2011;
[2] Janardhan N., Bobba U., Effect of Everyday Noise on Hearing in Rural and Urban Population; A comparative Study, Narayana Medical Journal, vol. 4/issue 2, pp79-82, 2015.
[3] Hansell A., Cai Y.S., Gulliver J., Cardiovascular Health Effects of Road Traffic Noise, Book Environmental Impacts of Road Vehicles: Past, Present and Future, pp 107 – 132, 2017.
[5] Directive 2002/49/EC of the European Parliament and of the Council of 25 June 2002 relating to the assessment and management of environmental noise - Declaration by the Commission in the Conciliation Committee on the Directive relating to the assessment and management of environmental noise;
[6] Kurrer C., Atmospheric pollution and sound pollution, Fact Sheets European Parliament, FTU 2.5.5, 2021.
[7] Government Decision no.321 / 14.04.2005 on the assessment and management of environmental noise.
[8] STAS 10009-88 - Urban acoustics.
[9] STAS 6161/1- 89.
This work was carried out in the framework of the project:” Internal research grant in the field of environmental engineering regarding the study of the distribution of pollutants in the south-eastern part of Europe” (14886/11.05.2022)
Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 04 - 10 July, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
04 - 10 July, 2022
pollution, noise, Anova, Pearson coefficient