EXPERIMENTAL RESEARCH OF ENVIRONMENTAL NOISE IN URBAN CONDITIONS BEFORE AND DURING COVID-19 PERIOD ON THE EXAMPLE OF SAMARA REGION OF RUSSIAN FEDERATION

Akustika ◽  
2021 ◽  
pp. 193
Author(s):  
Andrey Vasilyev

Today the acoustical pollution is well monitored, especially in the urban environment, and in particular area it is still increasing. Environmental noise impact is increasing every year and may cause serious negative problems for inhabitants. Transport and industrial plants are making the most significant noise levels in the city environment. This paper presents the results of research of environmental noise in urban conditions before and during COVID-19 period on the example of Samara region of Russia. In Russia strong COVID-19 restrictions of traffic movement and industrial enterprises operation have caused significant variations of environmental noise generation and impact in conditions of urban territories. Comparison of results of environmental noise measurements noise in urban conditions before and during COVID-19 period is showing that transport noise level is reduced, but the industrial noise level is almost the same, especially in low frequency range.

Akustika ◽  
2021 ◽  
pp. 103
Author(s):  
Andrey Vasilyev

Environmental noise level from industrial enterprises is constantly increasing, especially in low frequency range. This paper presents the results of research and mapping of low frequency noise generated by power plants of industrial enterprises. Environmental noise mapping results of urban territory of Samara region of Russia are also presented. Results of noise measurements during industrial enterprises operation (on the example of “KuibyshevAzot” company) are showing that in some measuring points there were exceeding values compared with Russian sanitary norms requirements. The most serious problem is low frequency noise impact.


Author(s):  
Momir Praščević ◽  
Darko Mihajlov ◽  
Dragan Cvetkovic ◽  
Aleksandar Gajicki

Environmental noise level monitoring in Serbia is performed in several cities and it is pursuant to the Law on Environmental Noise Protection and the accompanying regulations. Although these regulations are in accordance with the national standards, the methodology of noise monitoring varies in different cities. The issues which differ include the following: the number of measurement spots, the number of daily, weekly, and monthly measurement intervals, the duration of measurement intervals, measurement parameters and noise indicators used for noise evaluation. Different measurement procedures are the consequence of diverse city configurations, traffic structure, traffic flow, locations of noise-sensitive objects, as well as diverse contribution of noise sources. The road traffic noise level monitoring in the City of Nis has been organized from 1995 until today based on short-term measurements. The values of noise indicators are calculated based on these short-term measurements. The two newly purchased noise monitoring terminals by the Noise and Vibration Laboratory of the Faculty of Occupational Safety in Nis, enabled the long-term noise measurements. The procedure of permanent and semi-permanent road traffic noise measurements at eight locations in the City of Nis has been carried out since January 1, 2014. The results of long-term road traffic noise measurements at the main streets of Niš city are presented in this paper as well as the possibility of their presentation in the sense of the Harmonica index.


2018 ◽  
Vol 16 (1-2) ◽  
Author(s):  
Predrag Ilić ◽  
Dragana Nešković Markić ◽  
Ljiljana Stojanović Bjelić

Noise pollution, as a major environmental problem, is present in Banja Luka. The measured values exceeded the level of noise allowed, which is a great problem. Evaluation of the noise levels was carried out in the streets in the area with health institutions. Objectives of this research were to evaluate the environmental noise pollution in the City of Banja Luka due to traffic noise and to compare the measured noise levels in the city with legislation and to establish the connection between noise and the number of vehicles. Correlation between the noise level and number of vehicles was positive and significant during the study period (r=0.89). It is confirmed that, with the increase of the number of vehicle, the noise level increases, i.e. the decrease in the number of vehicle decreases the noise level.


2010 ◽  
Vol 18 (4) ◽  
pp. 271-280 ◽  
Author(s):  
Pranas Baltrėnas ◽  
Egidijus Petraitis ◽  
Tomas Januševičius

Noise is a relevant problem faced not only by Lithuania but across the world. With motor traffic flow increase, the noise caused by them is also growing and in particular noisy are heavy vehicles and motorcycles. Noise measurements were taken near the main streets in the southern part of Panevežys. Measurements were made during three time periods of the day: in the daytime (from 6 a.m. to 6 p.m.), in the evening (from 6 p.m. to 10 p.m.) and at night (from 10 p.m. to 6 a.m.). In this part of the city noise is mainly generated by cars. The measured noise levels were compared with the noise level limit (NLL) in the measurement places where the NLL is most often exceeded. Noise level analysis and traffic flows are presented in the work. As the performed measurements show, the NLL in the daytime was exceeded by 65%, in the evening by 88%, and at night by 71% of all the total measurements made. The equivalent NLL was exceeded by up to 14 dBA and the maximum NLL – by up to 17 dBA. The highest excess of the NLL was recorded by streets with the heaviest traffic. Santrauka Triukšmas – ne tik Lietuvoje, bet ir visame pasaulyje aktuali problema. Automobiliu srautams vis labiau didejant, dideja ir ju keliamas triukšmas, ypač triukšmingi yra sunkvežimiai ir motociklai. Triukšmo tyrimai atlikti Panevežio pietineje dalyje prie pagrindiniu gatviu. Matavimai vyko skirtingu paros laiku: diena 6–18 val., vakare 18–22 val. ir nakti 22–6 valandomis. Šioje miesto dalyje pagrindine triukšmo priežastis – automobiliai. Triukšmo lygis, išmatuotas vietose, kuriose dažniausiai viršijamas, lyginamas su leidžiamosiomis normomis. Atlikta triukšmo lygiu ir transporto srautu analize. Iš duomenu matyti, kad leidžiamasis triukšmo lygis diena viršytas 65 %, vakare 88 %, o nakti – 71 % atliktu matavimu. Ekvivalentinis triukšmo lygis viršytas iki 14 dBA, o maksimalusis leidžiamasis – iki 17 dB. Labiausiai triukšmo lygis viršijamas prie gatviu, kuriose pravažiuoja daugiausia automobiliu. Резюме Шум является актуальной проблемой не только в Литве, но и во всем мире. С увеличением автомобильных потоков неизбежно увеличивается и вызываемый ими (особенно грузовиками и мотоциклами) шум. Исследования шума проводились в южной части города Паневежиса, вблизи основных улиц в разное время суток: днем с 6 до 18 часов, вечером с 18 до 22 часов и ночью с 22 до 6 часов утра. В этой части города основным источником шума являются автомобили. Измеренные уровни шума были сравнены с допустимыми уровнями для мест, в которых он чаще всего превышен. Произведен анализ уровней шума и транспортных потоков. Из данных измерений видно, что допустимый уровень шума в дневное время был превышен в 65%, вечером – в 88%, а ночью – в 71% проведенных измерений. Эквивалентный уровень шума превышен до 14 дБа, а максимально допустимый – до 17 дБа. Уровни шума особенно увеличены вблизи улиц, по которым проезжает больше всего автомобилей.


Author(s):  
Miki Yonemura ◽  
Hyojin Lee ◽  
Shinichi Sakamoto

Recently in Japan, noises from wind turbines and domestic use heat sources sometimes cause an increase in noise annoyance owing to low-frequency tonal components. The purpose of this study was to investigate the effects of the tonal components on the annoyance of the environmental noise. The authors conducted an auditory test in the laboratory to evaluate the annoyance of tonal noise using a seven-step rating method. The stimuli were composed of a broadband noise modeling of the environmental noise (25, 30, and 35 dB) and a low-frequency tonal component. With the tonal component added to the broadband noise, the frequency and tonal audibility were varied to 40, 50, 100, 200, and 400 Hz and 0, 3, 6, 9, and 12 dB, respectively. The amount of increase in annoyance owing to the addition of the tonal component was quantitatively evaluated as a tonal adjustment by comparing it with broadband noise. As a result, tonal adjustment ranged from 0 to 7 dB, and the higher the tonal frequency, the larger the value. For the test background noise level, the lower the background noise level of the test sound, the greater the value. This trend suggests that the influence of tonal components on subjective impressions is stronger in quiet environments such as residential areas. This result may provide a basis for the evaluation method, which varies the penalty in the noise evaluation according to the frequency of the pure tones and the noise level.


Land ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 66
Author(s):  
Agnieszka Jaszczak ◽  
Natalia Małkowska ◽  
Katarina Kristianova ◽  
Sebastian Bernat ◽  
Ewelina Pochodyła

Soundscape analyses and noise measurements should be a part of pre-design works involved in planning green areas in city centers. The aim of the study was to conduct a multi-criteria analysis of the soundscape of three parks in Olsztyn (Poland) as a part of the landscape planning process to determine the directions of re-design of places most exposed to noise. The research included: 1. functional and spatial analysis of the park surroundings in reference to the city environment, 2. analysis of the acoustic map, 3. measurements of sound pressure levels (SPL) at selected points in two periods (leafless and leafy), 4. analysis of characteristic sounds, 5. interview with park users and preparation of a mental map. The results of research regarding the perception of the soundscape of all three parks by respondents differ slightly from the results of both the acoustic map and SPL measurements. The results also confirm the difference between SPL in the leafless and leafy period. Places most exposed to noise are located at the park boundaries along the main access roads, and at park entrances. Recommendations and sample solutions are proposed, based on two suggested design activities, namely the reduction of undesirable sounds, and introduction of desirable sounds to the parks.


Author(s):  
А.V. Lisovenko ◽  
O.L. Zakharova ◽  
G.Yu. Yamskikh

This article assesses the acoustic pollution of Abakan, which belongs to the category of large cities. Significant excess, according to the results of research, reaching 110 dB(A), occurs pointwise along highways and is observed in the central part of the city where the railway tracks run. Excesses on these sites are recorded twice as high as the normative indicator which is equal 55 dB(A). Building sites located in the northern, western and southwestern city districts should be considered as problematic areas in terms of extra acoustic load. Within these areas, the noise load reaches 65 dB(A). In northern and southern residential areas of Abakan, the noise level corresponds to the acoustic comfort mode. Additional noise measurements made in mid- and multi-storey residential areas of the city showed that the highest noise level is observed in winter period and reaches 68,8 dB(A). In summer, the noise level does not exceed the standard adopted for this physical factor.


Author(s):  
Tomasz Perzyński

The noise from means of transport is one of the main factors of environmental noise pollution and is one of the factors having an effect on human health. The article presents the problem of noise emitted by urban means of transport. The work focuses on analysis of the acoustic climate in the bus stop zone. In order to estimate the noise level, research was conducted in selected points in one of the Polish cities - Radom. The obtained results allowed assessment of the impact of transport on the noise level in the area of selected bus stops.


2021 ◽  
Vol 258 ◽  
pp. 09013
Author(s):  
Dmitry Topchiy ◽  
Lapidus Azariy

The dynamism of changes in the external environment of residential real estate objects with the simultaneous limitation of urban areas are the main prerequisite for creating new construction projects that have a high level of investment attractiveness. Such combined factors open up and increase the importance of using such a tool as redevelopment. Residential formations (complexes, districts, blocks, individual objects) are an obvious result of the artificial organization of the territory urban environment available for development. The quality of the organization of an artificial (residential) environment is determined primarily by the level of technical and moral condition of capital construction objects of residential purposes: houses, buildings, complexes, districts (micro-districts). The considered structural objects of the urban environment are exposed in the course of their functioning (operation) to certain natural and climatic, technical and technological, and social and cultural influences that lead to a certain loss of the original (established) quality of construction products. This loss of quality is expressed in the partial or complete loss of the ability of a construction object (complex of objects) to provide a comfortable and safe life for groups of the population or individuals living in the territory under consideration. Many industrial enterprises, especially old ones, are therefore unable to withstand competition and the economic component of their existence, and are not able to provide an appropriate environmental environment. In this regard, the most rational and mutually beneficial solution is considered to be the transfer of such enterprises outside the city borders, or to specially designated industrial areas, with the subsequent redevelopment of the liberated territory for the needs of the city itself, housing construction, or social and cultural or business facilities. City municipalities are also interested in this process in order to revitalize large areas that are often empty or under-used. The economic component of this process for the city, with proper redevelopment will be tax increases that will be transferred to the city from the well-functioning of the new building complex, providing the population of the city and its district the most popular services. It is particularly necessary to highlight industrial urban areas that have historical significance and contain objects of high architectural value on their territories, which give special expressiveness to the appearance of cities. In addition to social, economic, and environmental issues, the issue of redevelopment of all these territories also has a certain historical significance, including from the point of view of preserving not only the architectural features, but also the special microclimate of each particular urban district. The paper presents the results of a study of the problem of improving the efficiency of the organization of works on the redevelopment of urban territories in the conditions of existing development.


Akustika ◽  
2019 ◽  
Vol 32 ◽  
pp. 105-109 ◽  
Author(s):  
Andrey Vasilyev

Presently noise impact may be considered as one of the most serious problems in conditions of modern towns. Transport noise is one of the main noise sources of the city environment. Some approaches to noise estimation and mapping in conditions of Russia are described. Formalization and modeling of transport flows it is convenient to do by using of influence diagrams. Program provision «Sound-City-Test» have been developed for calculation of external noise sources and for development of dynamic maps with using of principles of object oriented visual programming. Analysis of acoustical pollution of urban territories on the example of samara region of Russia was done. In total, the results of noise measurements in the territory of Samara region of Russia is showing that in the number of points of measurement there is exceeding of sanitary norms. The most serious problem of noise influence is for the dwelling territories adjoining to transport highways. The Russian experience of transport noise mapping is discussed.


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