scholarly journals Forecast Estimates Based on the Results of Measuring Infrasound in Residential Areas of the City of Saint Petersburg

2020 ◽  
pp. 39-43
Author(s):  
OI Kopytenkova ◽  
NA Mozzhukhina ◽  
GB Yeremin ◽  
EB Kuznetsova ◽  
ID Bulavina ◽  
...  
Keyword(s):  
Low Frequency ◽  
Noise Pollution ◽  
Air Transport ◽  
Anthropogenic Sources ◽  
Frequency Noise ◽  
Residential Areas ◽  
Saint Petersburg ◽  
Industrial Enterprises ◽  
Permissible Levels ◽  
The City

Introduction. The process of predicting infrasound exposures in residential areas is difficult due to the lack of methods of mathematical modeling and calculating probable infrasound levels in an open area. The assessment of infrasound exposures in residential areas can be only performed using direct instrumental studies. The purpose of the study was to determine the prospects for organizing and monitoring infrasound exposures in residential areas. Materials and methods. We analyzed federal and departmental regulations on infrasound measurements. Low-frequency noise pollution in residential areas of various parts of St. Petersburg was studied. The objects of experimental research were selected in the immediate vicinity of road junctions, railways, air transport trajectories, and in the zones of large industrial enterprises. Results. More than 1,000 instrumental measurements were taken. We analyzed infrasound test reports, which were part of environmental engineering surveys, over a 10-year period and found significant discrepancies between the results obtained under similar conditions by various laboratories. Conclusions. We established that the infrasound levels produced by the main anthropogenic sources in St. Petersburg did not exceed permissible levels. We also substantiated inexpediency of conducting comprehensive studies and monitoring the parameters of infrasound in residential areas.

Impacts of low-frequency noise from industrial sources in residential areas

2021 ◽  
Vol 182 ◽  
pp. 108203
Author(s):  
Lígia T. Silva ◽  
Alda Magalhães ◽  
José Ferreira Silva ◽  
Fernando Fonseca
Keyword(s):  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Residential Areas ◽  
Industrial Sources

scholarly journals Assessments and Control of Anthropogenic Noise Pollution in Students’ Residential Areas in Ogbomoso

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
A. O. Ajayeoba
Keyword(s):  
Medical History ◽  
Undergraduate Students ◽  
Circuit Breaker ◽  
Noise Pollution ◽  
Sound Level ◽  
Anthropogenic Sources ◽  
Anthropogenic Noise ◽  
Residential Areas ◽  
Sound System ◽  
And Control

Increased rate of noise-associated risk factors such as speech interference and reduction in productivity, necessitated that control and regulation measures be put in place, to contain anthropogenic noise pollution in the students’ hostels. Therefore, this study assessed the various anthropogenic sources of noise pollution in students’ hostels and developed a Sound Level Monitor and Control (SLMC) device. 1250 undergraduate students across 5 students’ residential zones were sampled for demographics and investigations were conducted into respondents’ perceived medical history, identification of noise sources, and evaluation of hearing loss. Effects of noise levels were evaluated using 100 respondents’ rooms per zone following standard procedures, considering Sound-System-Only (SSO), Generators-Only (GO), and combination of Sound-System-and-Generator (SSG), loud-conversations, etc., as sources of noise. However, a noise control device incorporated with a circuit breaker was developed. The respondents were 51.2% male and 48.8% female, with 58% in the age range 18 – 27 years. The medical history showed that 1.2 and 6.4% had a hearing problem in short and long times, respectively, while 43.6% affirmed that SSO was a major noise pollution causal factor. SSO, GO, loud conversations, traffic, and grinding machines were identified as the prominent sources of anthropogenic induced noise. The minimum average SL result gave a value of 62.8400dB for both ventilated and unventilated rooms, which is 14% above 55dB threshold value recommended by the National Environmental Standards and Regulations Enforcement Agency. The developed SLMC device gave notification at the SL above 55dB for 15 seconds before disconnecting the sound system if not regulated.

Proposed Criteria for Low Frequency Industrial Noise in Residential Communities

2005 ◽  
Vol 24 (2) ◽  
pp. 97-105 ◽  
Author(s):  
George F. Hessler
Keyword(s):  
United States ◽  
Low Frequency ◽  
The United States ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Residential Areas ◽  
Noise Sources ◽  
Residential Communities ◽  
Open Cycle ◽  
Industrial Sources

There is a need in the United States for some Federal or prominent standards organization to publish limits in residential areas for low frequency noise attributable to industrial sources. This paper proposes maximum limits based on experience in investigating and solving low frequency noise problems, principally from open cycle combustion turbine installations The author believes the recommended C-weighted limits in this paper are applicable to most common steady low-frequency noise sources in addition to combustion turbines due to the combined tonal and broadband character of the sound. It is hoped standardizing bodies can add this reference to the larger body of literature to arrive at a workable sorely-needed standard.

scholarly journals Evidence of Cnidarians sensitivity to sound after exposure to low frequency noise underwater sources

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Marta Solé ◽  
Marc Lenoir ◽  
José Manuel Fontuño ◽  
Mercè Durfort ◽  
Mike van der Schaar ◽  
...  
Keyword(s):  
Fish Larvae ◽  
Low Frequency ◽  
Noise Pollution ◽  
Marine Species ◽  
Acoustic Trauma ◽  
Sensory Epithelium ◽  
Frequency Noise ◽  
Noise Levels ◽  
Sound Sources ◽  
The Impact

Abstract Jellyfishes represent a group of species that play an important role in oceans, particularly as a food source for different taxa and as a predator of fish larvae and planktonic prey. The massive introduction of artificial sound sources in the oceans has become a concern to science and society. While we are only beginning to understand that non-hearing specialists like cephalopods can be affected by anthropogenic noises and regulation is underway to measure European water noise levels, we still don’t know yet if the impact of sound may be extended to other lower level taxa of the food web. Here we exposed two species of Mediterranean Scyphozoan medusa, Cotylorhiza tuberculata and Rhizostoma pulmo to a sweep of low frequency sounds. Scanning electron microscopy (SEM) revealed injuries in the statocyst sensory epithelium of both species after exposure to sound, that are consistent with the manifestation of a massive acoustic trauma observed in other species. The presence of acoustic trauma in marine species that are not hearing specialists, like medusa, shows the magnitude of the problem of noise pollution and the complexity of the task to determine threshold values that would help building up regulation to prevent permanent damage of the ecosystems.

RESEARCH AND MAPPING OF LOW FREQUENCY NOISE GENERATED BY POWER PLANTS OF INDUSTRIAL ENTREPRISES

Akustika ◽  
2021 ◽  
pp. 103
Author(s):  
Andrey Vasilyev
Keyword(s):  
Power Plants ◽  
Low Frequency ◽  
Environmental Noise ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Frequency Range ◽  
Noise Mapping ◽  
Industrial Enterprises ◽  
Noise Measurements ◽  
Urban Territory

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.

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
Keyword(s):  
Noise Level ◽  
Low Frequency ◽  
Environmental Noise ◽  
Industrial Plants ◽  
City Environment ◽  
Industrial Enterprises ◽  
Urban Territories ◽  
Noise Measurements ◽  
Urban Conditions ◽  
The City

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.

scholarly journals Acoustic adaptation to city noise through vocal learning by a songbird

2018 ◽  
Vol 285 (1888) ◽  
pp. 20181356 ◽  
Author(s):  
Dana Lynn Moseley ◽  
Graham Earnest Derryberry ◽  
Jennifer Nicole Phillips ◽  
Julie Elizabeth Danner ◽  
Raymond Michael Danner ◽  
...  
Keyword(s):  
Signal Transmission ◽  
Low Frequency ◽  
Vocal Learning ◽  
Noise Pollution ◽  
Anthropogenic Noise ◽  
Control Treatment ◽  
Frequency Noise ◽  
Evolutionary Mechanisms ◽  
Cultural Selection ◽  
Acoustic Adaptation

Anthropogenic noise imposes novel selection pressures, especially on species that communicate acoustically. Many animals—including insects, frogs, whales and birds—produce sounds at higher frequencies in areas with low-frequency noise pollution. Although there is support for animals changing their vocalizations in real time in response to noise (i.e. immediate flexibility), other evolutionary mechanisms for animals that learn their vocalizations remain largely unexplored. We hypothesize that cultural selection for signal structures less masked by noise is a mechanism of acoustic adaptation to anthropogenic noise. We test this hypothesis by presenting nestling white-crowned sparrows (Zonotrichia leucophyrs) with less-masked (higher-frequency) and more-masked (lower-frequency) tutor songs either during playback of anthropogenic noise (noise-tutored treatment) or at a different time from noise playback (control treatment). As predicted, we find that noise-tutored males learn less-masked songs significantly more often, whereas control males show no copying preference, providing strong experimental support for cultural selection in response to anthropogenic noise. Further, noise-tutored males reproduce songs at higher frequencies than their tutor, indicating a distinct mechanism to increase signal transmission in a noisy environment. Notably, noise-tutored males achieve lower performance songs than their tutors, suggesting potential costs in a sexual selection framework.

scholarly journals How Can Low-Frequency Noise Exposure Interact with the Well-Being of a Population? Some Results from a Portuguese Municipality

2019 ◽  
Vol 9 (24) ◽  
pp. 5566 ◽  
Author(s):  
Juliana Araújo Alves ◽  
Lígia Torres Silva ◽  
Paula Remoaldo
Keyword(s):  
Urban Areas ◽  
Noise Exposure ◽  
Low Frequency ◽  
Noise Pollution ◽  
Well Being ◽  
Sound Level ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Sound Levels ◽  
Exposed Population

Noise pollution is the second most harmful environmental stressor in Europe. Portugal is the fourth European country most affected by noise pollution, whereby 23.0% of the population is affected. This article aims to analyze the effects of exposure to low frequency noise pollution, emitted by power poles and power lines, on the population’s well-being, based on a study of “exposed” and “unexposed” individuals in two predominantly urban areas in north-western Portugal. To develop the research, we used sound level (n = 62) and sound recording measurements, as well as adapted audiometric test performance (n = 14) and surveys conducted with the resident population (n = 200). The sound levels were measured (frequency range between 10 to 160 Hz) and compared with a criterion curve developed by the Department for Environment, Food and Rural Affairs (DEFRA). The sound recorded was performed 5 m away from the source (400 kV power pole). Surveys were carried out with the “exposed” and “unexposed” populations, and adapted audiometric tests were performed to complement the analysis and to determine the threshold of audibility of “exposed” and “unexposed” volunteers. The “exposed” area has higher sound levels and, consequently, more problems with well-being and health than the “unexposed” population. The audiometric tests also revealed that the “exposed” population appears to be less sensitive to low frequencies than the “unexposed” population.

scholarly journals Portable Low-Frequency Noise Reduction Device for Both Small Open and Closed Spaces

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Chao Wang ◽  
Haiyang Gao ◽  
Liyao Yu ◽  
Tiantian Yu ◽  
Wenhui Yan ◽  
...  
Keyword(s):  
Noise Reduction ◽  
Open Space ◽  
Active Noise Control ◽  
Low Frequency ◽  
Noise Pollution ◽  
Noise Spectrum ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Pollution Problem ◽  
Negative Impacts

Noise pollution has been given more attention due to its negative impacts on human health and disease. The portable low-frequency noise reduction device we developed in this research can provide an effective way for solving low-frequency noise pollution problem in the small space. This work describes the design principle and the prototype structures for two versions of V1.5 and V2.0 and builds the noise test systems for small spaces, respectively. These devices, installed on the outer surface of the small spaces, can automatically identify the noise spectrum and implement noise reduction by means of the active noise control (ANC) technology. The testing results indicate that the noise can be reduced 12 dB in the range of 250 Hz~400 Hz for the small closed space while, for the small open space, the best effect of 5.88 dB occurs in the optimal frequency of 450 Hz. These effects will be weakened with the increasing distance away from the source and show the obvious axisymmetric distribution in the inverted cone space.

scholarly journals The possibility of provision of hygienically safe residing for the population in residential construction located closely to air transport enterprises

2019 ◽  
Vol 95 (11) ◽  
pp. 1029-1032
Author(s):  
R. S. Gildenskiold ◽  
Tatyana K. Tatyanyuk ◽  
S. I. Savelyev ◽  
V. K. Rekis
Keyword(s):  
Sound Pressure ◽  
Noise Pollution ◽  
Optimal Location ◽  
Air Transport ◽  
Residential Construction ◽  
The Military ◽  
The Impact ◽  
The City ◽  
Radical Solution ◽  
Vast Territory

Operation of the modern heavy aircraft on the surrounding vast territory is associated with the appearance of high levels of sound pressure generated by the powerful engines, especially during takeoff and landing operations. Currently, the elimination or significant reduction of noise pollution on the environment technically does not yet have a radical solution and the possible reduction of the impact ofnoise pollution on the residents ofnearby settlements is achievedfor residents of building by the optimal location of the runway, changing in conditions for the takeoff and landing of aircrafts, the ordering of the regimen of the airport, the introduction of the package sufficiently effective anti-noise diverse - engineering, planning activities, in some cases, the creation ofprotective noise shield on the border of the residential area and the construction ofprotective awnings over the children’s and sports fields with fencing shields converted in the direction of the runway. An example of a positive decision, taking into account the complexity and variety of aspects of the problem, it is possible to consider the development of the project plan of the new microdistrict «Eletsky» in the Soviet district of the city of Lipetsk, falling under the impact of aircraft noise of plying aircrafts of the military airfield.

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