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Tytuł:
On the Noise Hazard Assessment within the Intermediate Range of the High Audible and the Low Ultrasonic Frequencies
Autorzy:
Śliwiński, A.
Powiązania:
https://bibliotekanauki.pl/articles/177315.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ultrasonic noise assessment
high frequency audiometry
Opis:
In parallel to the ultrasonic noise assessment procedures and research activity in the field there have appeared several papers in the domain of so called high-frequency audiometry which covers the range of frequencies 8–20 kHz. They are important for recognizing the harmfulness and hazard of the audible high frequency sound components in the same range as the one of the low frequency ultrasonic noise. On the other hand there exists a certain inconsequent situation in the general approach to the problem of ultrasonic noise hazard assessment in work places environment which concerns the convention to include the frequency range of 10–20 kHz to the domain of ultrasonics. The range consists of one third octave bands of central frequencies: 10, 12.5, 16, 20 kHz and conventionally is called low frequency ultrasonic noise though at least the components of the two lowest bands are naturally audible by a majority of population (mainly young people).The paper presents a discussion related to some achievements of the two domains and some conclusions which could be useful for a more consequent description of the subject and could be taken into account in the future regulations for the ultrasonic noise assessment in work places environment.
Źródło:
Archives of Acoustics; 2016, 41, 2; 331-338
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of the Romanian framework and the challenges in implementing the noise mapping legislation
Autorzy:
Popescu, Diana Ioana
Powiązania:
https://bibliotekanauki.pl/articles/31339841.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
environmental noise
noise assessment
noise mapping
annoyance
noise exposure
action plans
Opis:
The Environmental Noise Directive (END), published in 2002, was transposed into Romanian local law in 2005, and it was the starting point for the first urban noise mapping exercises, initially conducted in nine Romanian cities. This paper presents the main evolutionary aspects of the noise assessment process, the development of strategic noise maps, and action plans, dealing with both the legislative side and the practical approach and results obtained. The study considers the specific regulations established by the European Commission regarding environmental noise assessment and deals with the global context at the country level, in which they have been implemented and applied.
Źródło:
Archives of Acoustics; 2023, 48, 3; 273-280
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigations of Auditory Filters Based Excitation Patterns for Assessment of Noise Induced Hearing Loss
Autorzy:
Al-Dayyeni, W. S.
Sun, P.
Qin, J.
Powiązania:
https://bibliotekanauki.pl/articles/176368.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
noise induced hearing loss
excitation pattern
basilar membrane motion
auditory filter
noise assessment metrics
Opis:
Noise induced hearing loss (NIHL) as one of the major avoidable occupational related health issues has been studied for decades. To assess NIHL, the excitation pattern (EP) has been considered as one of the mechanisms to estimate the movements of the basilar membrane (BM) in the cochlea. In this study, two auditory filters, dual resonance nonlinear (DRNL) filter and rounded-exponential (ROEX) filter are applied to create two EPs, the velocity EP and the loudness EP respectively. Two noise hazard metrics are proposed based on two EPs to evaluate hazardous levels caused by different types of noise. Moreover Gaussian noise and single-tone noise are simulated to evaluate performances of the proposed EPs and the noise metrics. The results show that both EPs can reflect the responses of the BM to different types of noise. For Gaussian noise there is a frequency shift between the velocity EP and the loudness EP. The results suggest that both EPs can be used for assessment of NIHL.
Źródło:
Archives of Acoustics; 2018, 43, 3; 477-486
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Options to Reduce Noise Exposure to Shooters on Sport Shooting Ranges
Autorzy:
Boczkowski, Arkadiusz
Adamski, Mateusz
Bień, Jacek
Chwalny, Karol
Nosek, Michał
Paszek, Patryk
Pisarska, Marzena
Powiązania:
https://bibliotekanauki.pl/articles/2064561.pdf
Data publikacji:
2021
Wydawca:
STE GROUP
Tematy:
noise
shooting range
acoustic silencers
exposure to noise
noise risk assessment
Opis:
The intensive development of sport shooting and the significant increase in the number of people using sport and recreational shooting ranges also increases the risk of hearing damage to shooters, due to exposure to impulse noise from the shots of firearms. This article discusses the methodology for assessing shooters’ exposure to noise and identifies and extensively discusses possible ways to minimise this exposure. It then describes a research experiment carried out to measure and calculate the effectiveness of noise reduction by means of acoustic silencers when shooting with typical weapons in the most popular sporting and hunting calibres. The experiment also included firing tests with subsonic ammunition. On this basis, conclusions were drawn regarding the possibility of reducing impulse noise during shooting and the possibility of eliminating the risk of hearing damage.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 330--342
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodological basis of road acoustic researches
Autorzy:
Batura, Karolina Paula
Waligórski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2097516.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
acoustic screen
passenger car
combustion engine
health
noise assessment
ekran akustyczny
samochód osobowy
silnik spalinowy
zdrowie
ocena hałasu
Opis:
Transport is one of the most burdensome negative sources affecting the natural environment. Long-term exposure of the body to exhaust pollution can cause health problems and, in the worst case, even lead to death. In addition to exhaust emissions, traffic noise is another equally important issue. Due to its nature, variability over time or the design diversity of vehicles in the traffic flow, it is a phenomenon difficult to define. Like exhaust pollution, it affects people's health and quality of life. In addition to its direct impact on the human physical system, it can also cause psychosomatic disorders, which is why a detailed analysis of road noise taking into account the real operation of the vehicle is so important. The paper presents the basic concepts related to the problem of traffic noise in the world, determines the sources of noise in vehicles and the methodology of conducting acoustic road tests. At the final stage of the scientific paper, methods of reducing excessive noise levels in large urban agglomerations were also presented, and the effectiveness of using noise barriers on selected parts of the city road network using proprietary acoustic tests was assessed.
Źródło:
Combustion Engines; 2021, 60, 2; 32--38
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Ultrasonic Noise Hazard in Workplaces Environment
Autorzy:
Śliwiński, A.
Powiązania:
https://bibliotekanauki.pl/articles/176758.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ultrasonic noise hazard assessment
maximal acoustic level values distribution
technological ultrasonic devices
Opis:
The hazard assessment of ultrasonic noise impact on human body at workplaces presents an open problem; it is not satisfactorily solved comparing the fund of knowledge and standard regulations established for the case of audible noise. Some research carried on in the Central Institute of Labour Protection - National Research Institute, Poland, are essential for elaboration reliable procedures for the assessment of ultrasonic noise hazard and they have to bring to modernization and creation the corresponding standards in this field. In the presentation, some problems related to measurement procedures applied as well as to the interpretation of results essential for hazard assessment of ultrasonic noise impact on human body will be considered; in particular such cases where some procedures elaborated for audible noise assessment are being transferred to apply in the ultrasonic range without taking fully into account some specific aspects of the high frequency components of the noise.
Źródło:
Archives of Acoustics; 2013, 38, 2; 243-252
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nuisance assessment of different annoying sounds based on psychoacoustic metrics and electroencephalography
Ocena uciążliwości wybranych źródeł hałasu na podstawie parametrów psychoakustycznych i badań elektroencefalograficznych
Autorzy:
Pamuła, H.
Kasprzak, C.
Kłaczyński, M.
Powiązania:
https://bibliotekanauki.pl/articles/328109.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
noise assessment
annoying sounds
sound nuisance
sound quality
EEG
psychoacoustics
ocena hałasu
dźwięk uciążliwy
uciążliwość hałasu
jakość dźwięku
psychoakustyka
Opis:
The aim of the study was to assess whether four psychoacoustic parameters (sharpness, roughness, fluctuation strength and tonality) are useful in describing the perceived annoyance of selected noise sources with respect to an objective assessment based on the acoustics standards. Second goal was to verify if the perceived annoyance of such noises correlates with dominant frequency in electroencephalography (EEG) frequency bands. Twenty sound sources, varying in the degree of nuisance, have been assessed by 178 respondents in an Internet-based psychoacoustic test. Obtained annoyance grades were correlated with calculated psychoacoustic and normative parameters and the positive correlation between perceived annoyance and three psychoacoustic parameters (sharpness, roughness and fluctuation strength) was found. In the second part EEG study during listening of recorded sounds was performed on 18 healthy volunteers. Spearman’s rank correlation confirmed that dominant frequencies in alpha (7-14 Hz) and beta2 band (20-30 Hz) were rising with the increasing annoyance of the sounds. Results obtained may be useful in specifying and clarifying permissible noise levels for annoying sounds.
Celem prac było zbadanie czy psychoakustyczne parametry takie jak ostrość, szorstkość, siła fluktuacji, tonalność mogą być użyteczne do opisu uciążliwości wybranych źródeł hałasu, w odniesieniu do obiektywnej oceny opartej o akustyczne standardy. Drugim celem pracy było sprawdzenie, czy postrzegana uciążliwość tych dźwięków koreluje z częstotliwościami dominującymi w pasmach częstotliwości stosowanych w elektroencefalografii (EEG). W pierwszej części badań 178 osób wypełniło ankietę, oceniając uciążliwość prezentowanych dźwięków. Otrzymane oceny zostały skorelowane z wyliczonymi psychoakustycznymi i normatywnymi parametrami. Potwierdzono, że wraz ze wzrostem wartości parametrów takich jak ostrość, szorstkość i siła fluktuacji, wzrasta także postrzegana przez słuchaczy uciążliwość dźwięków. W drugiej części eksperymentu wykonano badania EEG 18 osób podczas odsłuchu powyższych 20 nagrań. Test korelacji rang Spearmana potwierdził, że dominujące częstotliwości w paśmie alfa (7-14Hz) i beta2 (20-30Hz) wzrastały wraz ze wzrostem średniej oceny uciążliwości. Wyniki przeprowadzonych badań mogą być przydatne do doprecyzowania parametrów oceny hałasu i ich dopuszczalnych wartości.
Źródło:
Diagnostyka; 2016, 17, 3; 67-74
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Global Index of Acoustic Assessment of Machines—Results of Experimental and Simulation Tests
Autorzy:
Pleban, D.
Powiązania:
https://bibliotekanauki.pl/articles/90747.pdf
Data publikacji:
2011
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
acoustic assessment
machinery
noise
Opis:
A global index of machines was developed to assess noise emitted by machines and to predict noise levels at workstations. The global index is a function of several partial indices: sound power index, index of distance between the workstation and the machine, radiation directivity index, impulse and impact noise index and noise spectrum index. Tests were carried out to determine values of the global index for engine-generator; the inversion method for determining sound power level was used. It required modelling each tested generator with one omnidirectional substitute source. The partial indices and the global index were simulated, too. The results of the tests confirmed the correctness of the simulations.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2011, 17, 3; 277-286
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method of Acoustic Assessment of Machinery Based on Global Acoustic Quality Index
Autorzy:
Pleban, D.
Powiązania:
https://bibliotekanauki.pl/articles/178050.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
machinery
noise
acoustic assessment
workstation
Opis:
For the use of acoustic assessment of machinery, a global index of acoustic quality has been developed. Acoustic quality index is considered as a product of the following partial indices: sound power index, index of distance between the workstation and the machine, radiation directivity index, impulse and impact noise index and noise spectrum index. Each partial index always assumes positive value. If the value of global index does not exceed 1, the noise of the assessed machine will not exceed the admissible value of A-weighted sound pressure level at the workstation. Experimental tests were carried out in order to determine the values of global indices for a group of engine-generators, with the use of inversion method allowing for the determination of sound power level. The correctness of the determined values of indices was confirmed by the results of A-weighted sound pressure level measurements, at the hypothetically assumed workstations in simulated in situ conditions.
Źródło:
Archives of Acoustics; 2010, 35, 2; 223-235
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the influence of simultaneous vibroacoustic exposures on the operator
Badania wpływu jednoczesnych ekspozycji wibroakustycznych na operatora
Autorzy:
Engel, Z. W.
Kowalski, P.
Powiązania:
https://bibliotekanauki.pl/articles/280748.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
mechanical vibrations
noise
assessment method
Opis:
A new method of combined assessment of the influence of vibrations (hand-arm and whole-body) and noise hazards simultaneously acting on employees is presented in the paper. The method has been developed on the basis of tests performed in selected means of road transportation. The investigations have shown that separate estimation of individual factors leads to unreasonable omission of a certain part of energy influencing the employee. The suggested assessment method is based on the grounds of adding all kinds of the vibroacoustic energy. The application of this method allows one to take into consideration vibrations and noise occurring simultaneously, and due to this, the significant difference between results of the hazard assessment at workplaces in comparison to results obtained by previously used standardised methods is revealed.
W artykule przedstawiono nową metodę oceny łącznej drgań (miejscowych i ogólnych) i hałasu działających równocześnie na pracowników. Opracowano ją na podstawie wyników badań przeprowadzonych w wybranych środkach transportu drogowego. Badania wykazały, że niezależna ocena działających poszczególnych czynników wiąże się z nieuzasadnionym pomijaniem w ocenie części energii wibroakustycznej docierającej do pracownika. Proponowana metoda oceny opiera się na zasadzie sumowania energii wibroakustycznej. Zastosowanie opisanej metody pozwala na uwzględnienie jednoczesnego działania drgań i hałasu; powoduje to istotne różnice wyników oceny narażenia czynnikami wibroakustycznymi na stanowisku pracy w stosunku do wyników uzyskanych dotychczasowymi metodami znormalizowanymi.
Źródło:
Journal of Theoretical and Applied Mechanics; 2008, 46, 4; 799-811
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ultrasonic Noise Sources in a Work Environment
Autorzy:
Smagowska, B.
Powiązania:
https://bibliotekanauki.pl/articles/176626.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ultrasonic noise
assessment
exposure
sources
Opis:
The use of ultrasonic energy has created versatile possibilities of their applications in many areas of life, especially in hydro location and underwater telecommunications, industry and medicine. The consequence of a widespread use of high intensity ultrasonics in technology is the increased number of people who are exposed to such ultrasonic noise. Therefore it is important to determine the types of machines and other devices that are responsible for the emission of ultrasonic noise (10-40 kHz of central frequencies of one-third octave bands) as harmful and annoying hazard in the work environment. This paper presents ultrasonic noise sources frequently used in industry and preventive measures reducing the exposure to ultrasonic noise. Two types of ultrasonic noise sources have been distinguished: machines and other devices used to carry out or improve production processes, the so-called technological sources and sources in which ultrasonic noise exists as a non-intentional result of operation of many machines and systems, the so-called non-technological sources of ultrasonic noise. The emission of SPL has been determined for each groups of devices based on own measurement results.
Źródło:
Archives of Acoustics; 2013, 38, 2; 169-176
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acoustic Study of REpower MM92 Wind Turbines During Exploitation
Autorzy:
Kłaczyński, M.
Wszołek, T.
Powiązania:
https://bibliotekanauki.pl/articles/177881.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wind turbine noise
low frequency noise
airfoil self noise
measurements assessment
Opis:
The paper presents the current state of knowledge concerning the sources of noise generated by wind turbines, force measurement methodology, and assessment of noise onerousness in this type of installation, on the basis of a study concerning a wind farm with five REpower MM92 wind turbines and the electric power of 2 MW and the sound power level of 104.2 dB(A) each. Particular attention was focused on the often discussed problem of presence of infrasound generated by turbines and on the requirements of the applicable reference methodologies for the measurement of wind speed to 5 m/s, while the turbine reaches its full power at speeds above 10 m/s.
Źródło:
Archives of Acoustics; 2014, 39, 1; 3-10
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indicator Method of Assessing Acoustic Impact of Railway Vehicles
Autorzy:
Polak, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2203215.pdf
Data publikacji:
2022
Wydawca:
Instytut Kolejnictwa
Tematy:
noise
environmental impact assessment
acoustic impact
Opis:
The following article constitutes an attempt to solve the problem of the interpretation of results based on a comparison of measured values to permissible values. When exceeded limits are observed, the recipients of acoustic analyses (mainly non-specialists) are frequently uncertain as to how to interpret the results. At the moment, there is no unambiguous way of defining acceptable, alarming or unacceptable values of noise but an original indicator methodology, which allows a clear and easy interpretation of the results obtained, has been proposed. The suggested noise load factor (NLF), based on measurements of physical quantities, enables conducting a broader assessment of the nuisance of noise originating from railway vehicles.
Źródło:
Problemy Kolejnictwa; 2022, 196; 131--135
0552-2145
2544-9451
Pojawia się w:
Problemy Kolejnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Exposure to Noise of Workers to a Reinforcing Bar Rod Mill ArcelorMittal Algeria
Autorzy:
Meddeb, W.
Tadjine, K.
Powiązania:
https://bibliotekanauki.pl/articles/177791.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
noise
workstation
measurement
assessment
occupational risk
Opis:
This work is a contribution to a normative approach of noise assessment in the professional environment. It permits the identification of the affected workstations on the one hand and on the other hand it constitutes an important support to the preoccupations of the impact study on the environment in plants. It also informs us on the adequate preparation of the procedures required by the Environmental Management System (ISO 14001) being implemented in steel-making complex ArcelorMittal Algeria. It constitutes an answer to the recommended environmental politics. The proposed calculation methods are verified according to the recognized sources (ISO 9612, 2009) and the results will be estimated in relation to the legal thresholds recommended by international bodies. The methodology for measuring the noise exposure levels has been done according to the following steps: work analysis; selection of measurement strategy; measurements; error handling and uncertainty evaluations; calculations; and presentation of results. This will lead us to an implementation of a corrective and preventive action plan intended to master this occupational risk carrying prejudice to the health of the workers.
Źródło:
Archives of Acoustics; 2016, 41, 2; 339-344
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wymagania zasadnicze i procedury oceny zgodności urządzeń stosowanych na zewnątrz pomieszczeń w zakresie emisji hałasu do środowiska
Essential requirements and procedures for conformity assessment concerning noise emission in the environment by equipment for use outdoors
Autorzy:
Augustyńska, D.
Powiązania:
https://bibliotekanauki.pl/articles/179562.pdf
Data publikacji:
2004
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
hałas
ochrona przed hałasem
ocena zgodności wyrobu
emisja hałasu
noise
noise protection
conformity assessment
noise emission
Opis:
Hałas jest jednym z najbardziej naglących problemów środowiskowych na terenach zabudowanych w Europie. Dyrektywa 2000/14/WE ustala ujednolicone wymagania dotyczące emisji hałasu urządzeń stosowanych na zewnątrz pomieszczeń w celu uniknięcia trudności w swobodnym wprowadzeniu tych urządzeń do obrotu w obszarze rynku wewnętrznego oraz w celu ochrony zdrowia i dobrego samopoczucia obywateli. Przedstawiono najważniejsze postanowienia rozporządzenia ministra gospodarki, pracy i polityki społecznej wdrażającego tę dyrektywę.
Noise is one the most pressing environmental problems in urban areas in Europe. Directive 2000/14/EC establishes harmonized requirements relating to noise emission by equipment for use outdoors to prevent obstacles to the free movement of such equipment within the framework of the internal market and to protect the health and well-being of citizens. This article present the most important provisions given by the decree of the Minister of Economy, Labour and Social Policy that implement this directive.
Źródło:
Bezpieczeństwo Pracy : nauka i praktyka; 2004, 3; 23-24
0137-7043
Pojawia się w:
Bezpieczeństwo Pracy : nauka i praktyka
Dostawca treści:
Biblioteka Nauki
Artykuł
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