Skocz do pozycji: 1.

Tytuł:

Four-point probe resistivity noise measurements of GaSb layers

Autorzy:

Ciura, L.
Kolek, A.
Smoczyński, D.
Jasik, A.

Powiązania:

https://bibliotekanauki.pl/articles/201503.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

low frequency noise
GaSb noise
noise measurements
resistance noise calculation

Opis:

This paper concerns measurements and calculations of low frequency noise for semiconductor layers with four-probe electrodes. The measurements setup for the voltage noise cross-correlation method is described. The gain calculations for local resistance noise are performed to evaluate the contribution to total noise from different areas of the layer. It was shown, through numerical calculations and noise measurements, that in four-point probe specimens, with separated current and voltage terminals, the non-resistance noise of the contact and the resistance noise of the layer can be identified. The four-point probe method is used to find the low frequency resistance noise of the GaSb layer with a different doping type. For n-type and p-type GaSb layers with low carrier concentrations, the measured noise is dominated by the non-resistance noise contributions from contacts. Low frequency resistance noise was identified in high-doped GaSb layers (both types). At room temperature, such resistance noise in an n-type GaSb layer is significantly larger than for p-type GaSb with comparable doping concentration.

Źródło:

Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 1; 135-140
0239-7528

Pojawia się w:

Bulletin of the Polish Academy of Sciences. Technical Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

The application of a noise mapping tool deployed in grid infrastructure for creating noise maps of Urban areas

Autorzy:

Szczodrak, M.
Kotus, J.
Czyżewski, A.
Kostek, B.

Powiązania:

https://bibliotekanauki.pl/articles/305743.pdf

Data publikacji:

2013

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

noise map
noise modeling
grid computing
noise

Opis:

The concept and implementation of the system for creating dynamic noise maps in PL-Grid infrastructure are presented. The methodology of dynamic acoustical map screating is introduced. The concept of noise mapping, based on noise source and propagation models, was developed and employed in the system. The details of incorporation of the system to the PL-Grid infrastructure are presented. The results of simulations performed by the system prototype are depicted. The results in the form of noise maps obtained by a system are compared with some other solutions in order to investigate accuracy.

Źródło:

Computer Science; 2013, 14 (2); 231-242
1508-2806
2300-7036

Pojawia się w:

Computer Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

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

/5

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Skocz do pozycji: 4.

Tytuł:

Noise Monitoring, Mapping, and Modelling Studies – A Review

Autorzy:

Alam, Pervez
Ahmad, Kafeel
Afsar, Shakil S.
Akhtar, Nasim

Powiązania:

https://bibliotekanauki.pl/articles/125244.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

noise mapping
noise monitoring
noise modelling
CoRTN
FHWA

Opis:

This paper reviews the literature on noise monitoring, noise mapping and noise modeling studies carried out in different countries by many researchers. The article reveals the current status of the noise-related studies and noise mapping studies. It was discovered that 90% of the noise monitoring studies were focused on the traffic noise, while the remaining 10% focused on the residential, commercial and industrial areas. Sometimes, there may be a necessity to analyze the sound pressure levels all over the place, or around a particular piece of land and machinery of industry. Researchers have used the noise monitoring data for the development of 2D and 3D noise maps which gives a clear picture of the noise level around the source of noise in X, Y, and Z direction. For taking a decision regarding the noise level for any development project, predicting the noise level is always necessary. The traffic noise models are generally used for the purpose of prediction. Early models are based on constant vehicle speed, later some models predicted the noise level for interrupting the traffic flow. For instance, the Stop and Go model can be used for the prediction of the noise level in an interrupted flow. Four such models were reviewed and compared in this article.

Źródło:

Journal of Ecological Engineering; 2020, 21, 4; 82-93
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Developing Assumptions for the Tram Noise Attenuation Passive System Using the Noise Maps Analysis Method

Autorzy:

Nowakowski, Tomasz
Firlik, Bartosz
Staśkiewicz, Tomasz

Powiązania:

https://bibliotekanauki.pl/articles/177786.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

tramway
noise
rolling noise
bogie covers
noise maps

Opis:

The paper presents experimental research carried out to determine the possible actions to reduce the noise generated by trams in a highly urbanised area. A few design strategies affecting tram ride quality have been presented – especially in the aspect of the acoustic phenomena. Main sources of the noise in trams were characterised. The paper includes selected results of comprehensive studies of tram noise in the pass-by test based on the authors’ research methodology. The tests were carried out on various types of trams to recognise the acoustic phenomena characteristic for the rolling stock in a selected tram system. The results of the measurements were analysed both in the field of amplitudes based on noise maps and in respect to frequencies based on noise spectra. The results indicated the rolling noise as important issue demanding taking some actions in order to reduce its level. In this area, elements for the application of individual attenuation solutions, i.e. at the source and during propagation, were presented. The results of the measurements were used as input data to the assumptions of the noise attenuation passive system, which was the final outcome of the study. Dedicated external dampers were used in the case of wheel and rail pairs, where the dominant power of the noise is emitted. The acoustic properties of the bogie area and the bogie side covers were redeveloped to hamper the noise propagation, which is a novel application. The presented results indicate measurable benefits from the applied solutions on the tram noise reduction.

Źródło:

Archives of Acoustics; 2019, 44, 4; 783-792
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Road, Tram and Aircraft Traffic Noise Annoyance Related to the Number of Noise Events and the Equivalent Sound Level

Autorzy:

Felcyn, Jan
Ptak, Patrycja

Powiązania:

https://bibliotekanauki.pl/articles/31339951.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

noise annoyance
noise event
transportation noise
sound level

Opis:

Noise mapping is based on long-term noise indicators, such as LN or LDEN. On the other hand, transportation intensity changes during a day (road traffic peak hours) or a year (more flights during holidays) and this variability is not reflected in single sound level values. We wanted to find out whether not only sound level but also the number of noise events is the factor influencing noise annoyance assessment. Ambisonic recordings of real traffic in a city were used. Road, tramway, and aircraft traffic were investigated and two factors were manipulated: the equivalent sound level value and the number of noise events. All stimuli were presented in an anechoic chamber. The results showed that sound level is always a statistically significant parameter while the number of events has an impact only for tramways and airplanes. Moreover, the difference is observed only between one or more subgroups, no matter what the sound level value was. For road traffic this relation was not found to be statistically significant. It was also shown that the existence of tramway bonus or airplane malus is linked with the number of noise events.

Źródło:

Archives of Acoustics; 2022, 47, 4; 457-467
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Monitoring the Reaction and Response of People to Urban Noise

Autorzy:

Popescu, D. I.
Moholea, I. F.

Powiązania:

https://bibliotekanauki.pl/articles/178048.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

urban noise
noise pollution
noise annoyance
social survey

Opis:

An important aspect in assessing noise in urban agglomerations is the subjective one, which takes into account the sensitivity and specific reactions of residents to the noise in their living environment. This paper presents results of a sociological study initiated to determine the population awareness, regarding the urban acoustic environment and estimation of effects and disturbance. The survey was conducted in a Romanian city, to complement the information provided by the strategic noise map of the area. This approach allows the estimation of specific local patterns of reaction and response to urban noise of the exposed population and provides the information, needed to develop action plans and to set proper solutions for urban area planning.

Źródło:

Archives of Acoustics; 2010, 35, 2; 237-244
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Noise Analysis of Differential Multiport Networks : the Wave Approach

Autorzy:

Dobrowolski, J. A.

Powiązania:

https://bibliotekanauki.pl/articles/226027.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

differential networks
noise analysis
noise waves
noise correlation matrix
differential noise figure

Opis:

In this paper there is presented and discussed a general analysis method for noise characterization of noisy multiport differential networks. It is based on mixed mode, differential and common mode, noise waves representation of noise, generalized mixed-mode scattering parameters and generalized mixed-mode noise wave correlation parameters for the network. There are derived analytical relation between the noise figure for a given output port and the noise matrix and the scattering parameters of the network, as well as the correlations between the input port noise waves. The signal to noise ratio degradation factor is derived and discussed, too. Presented results can be implemented directly in a CAD software noise analysis of differential microwave multiport networks with differential as well as with conventional single ended ports.

Źródło:

International Journal of Electronics and Telecommunications; 2014, 60, 4; 281-286
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Cumulative Industrial Noise Impact on the Environment

Autorzy:

Wszołek, T.

Powiązania:

https://bibliotekanauki.pl/articles/178090.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

industrial noise
cumulative impact
noise indicators
cumulative noise levels

Opis:

The paper presents basic legal conditions, applicable to the calculation of cumulative noise levels in the environment with indication mainly on lack of detailed regulations both in formal and methodological approach for evaluating those levels. The paper is focused on methodological approach with the emphasis on analysis of existing case studies in the industry. The main subject of the analysis is the cumulation of industrial noise sources: newly designed and existing ones, together with a proposal of accumulate other types of the noise. Evaluation of cumulative noise levels for new (designed) objects is realised by computational methods, and for existing objects, by measurements or by combination of measurement and computational methods. It is assumed that the cumulative level is an energetic sum of the rating levels for all installations and it will not exceed the limit value in a given place. For the cumulation of different noise sources, the weighting for criterion values of these sources will be applied in aggregation.

Źródło:

Archives of Acoustics; 2017, 42, 2; 169-174
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Distrubuted system for noise threat evaluation based on psychoacoustic measurements

Autorzy:

Kotus, J.
Szczodrak, M.
Czyżewski, A.
Kostek, B.

Powiązania:

https://bibliotekanauki.pl/articles/220609.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

noise
environmental noise
dosimetry
measurements

Opis:

An innovative system designed for the continuous monitoring of acoustic climate of urban areas was presented in the paper. The assessment of environmental threats is performed using online data, acquired through a grid of engineered monitoring stations collecting comprehensive information about the acoustic climate of urban areas. The grid of proposed devices provides valuable data for the purpose of long and short time acoustic climate analysis. Dynamic estimation of noise source parameters and real measurement results of emission data are utilized to create dynamic noise maps accessible to the general public. This operation is performed through the noise source prediction employing a propagation model being optimized for computer cluster implementation requirements. It enables the system to generate noise maps in a reasonable time and to publish regularly map updates in the Internet. Moreover, the functionality of the system was extended with new techniques for assessing noise-induced harmful effects on the human hearing system. The principle of operation of the dosimeter is based on a modified psychoacoustic model of hearing and on the results of research performed with participation of volunteers concerning the impact of noise on hearing. The primary function of the dosimeter is to estimate, in real time, auditory effects which are caused by exposure to noise. The results of measurements and simulations performed by the system prototype are depicted and analyzed. Several cases of long-term and short-term measurements of noise originating from various sources were considered in detail. The presented outcomes of predicted degree of the hearing threshold shift induced during the noise exposure can increase the awareness of harmfulness of excessive sound levels.

Źródło:

Metrology and Measurement Systems; 2012, 19, 2; 219-230
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Noise Variability in Underground Room and Pillar Coal Mines

Autorzy:

Szary, M. L.
Chugh, Y. P.
Hirschi, J.

Powiązania:

https://bibliotekanauki.pl/articles/90626.pdf

Data publikacji:

2011

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

underground noise control
noise measurements
noise-induced hearing loss

Opis:

Noise in an underground coal mine has dominant components generated mainly from 3 sources: (a) continuous mining machines, (b) roof bolters, and (c) cars/vehicles used to transport personnel and/or coal. Each of these 3 noise sources also has a number of well-defined sub-sources with their own noise characteristics. Sound level meters were used to collect noise data in the form of instantaneous readings and also to check calibration of other sound measuring instruments. The most useful information was obtained from a spectrum analysis of continuous digital recordings of noise over time. This paper discusses the variability or dynamics of generated noise in both frequency and time domains in relation to several independent variables related to coal extraction and transportation processes.

Źródło:

International Journal of Occupational Safety and Ergonomics; 2011, 17, 3; 301-308
1080-3548

Pojawia się w:

International Journal of Occupational Safety and Ergonomics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

The Hearing Threshold of Employees Exposed to Noise Generated by the Low-Frequency Ultrasonic Welding Devices

Autorzy:

Dudarewicz, A.
Zaborowski, K.
Rutkowska-Kaczmarek, P.
Zamojska-Daniszewska, M.
Śliwińska-Kowalska, M.
Zamysłowska-Szmytke, E.
Pawlaczyk-Łuszczyńska, M.

Powiązania:

https://bibliotekanauki.pl/articles/178077.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

noise-induced hearing loss
noise
ultrasonic noise
occupational exposure

Opis:

The aim of the study was to assess the hearing threshold levels (HTLs) in employees exposed to noise generated by low-frequency ultrasonic technological equipment in comparison with the HTLs of workers exposed to audible noise at the similar A-weighted equivalent-continuous sound pressure level. The study includes measurements of ultrasonic and audible noise at workplaces and hearing tests, i.e. conventional pure-tone audiometry and extended high-frequency audiometry. The study group comprised 90 workers, aged 41.4 ± 10.0 years (mean±SD), exposed for 17.3 ± 9.8 years to noise generated by ultrasonic devices at mean daily noise exposure level (‹L_EX,8h›) of 80.6 ± 2.9 dB. The reference group consists of 156 subjects, exposed to industrial noise (without ultrasonic components) at similar A-weighted equivalent-continuous sound pressure level (‹L_EX,8h› = 81.8 ± 2.7 dB), adjusted according to age (39.8 ± 7.7 years), gender and job seniority (14.0 ± 7.0 years). This group was selected from database collected in the Nofer Institute of Occupational Medicine. Audiometric hearing threshold levels in the frequency range of 0.5–6 kHz were similar in both groups, but in the frequency range of 8–12.5 kHz they were higher in the group of employees exposed to ultrasonic noise. The findings suggest that differences in the hearing threshold (at high frequencies) in analyzed groups may be due to differences in spectral composition of noise and show the need to continue the undertaken studies.

Źródło:

Archives of Acoustics; 2017, 42, 2; 199-205
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Software for calculation of noise maps implemented on supercomputer

Autorzy:

Czyżewski, A.
Szczodrak, M.

Powiązania:

https://bibliotekanauki.pl/articles/1943198.pdf

Data publikacji:

2009

Wydawca:

Politechnika Gdańska

Tematy:

noise map
supercomputer
road noise

Opis:

Investigation results relevant to the implementation of algorithms for calculation of noise maps are presented in this paper. The aim of implementing the algorithms on a computer cluster is explained. Selected implementation details of the software called Noise Propagation Model are described. The software interaction with the data acquisition system is presented. Noise maps obtained using the described software are presented. A comparison between the outcomes of the implemented models and the simulation results of a commercial program is presented. An analysis of the computation efficiency is described. A discussion concerning dynamic presentation of noise maps is also presented.

Źródło:

TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2009, 13, 4; 363-377
1428-6394

Pojawia się w:

TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

The Impact of Fireworks Noise on the Acoustic Climate in Urban Areas

Autorzy:

Kukulski, B.
Wszołek, T.
Mleczko, D.

Powiązania:

https://bibliotekanauki.pl/articles/176479.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

impulsive noise
fireworks
environmental noise

Opis:

New Year’s Eve is an example of a situation in which urban residents are exposed to an almost continuous and increased noise level from the impulsive sounds sources – fireworks. This custom has become a source of many controversies related to the protection of human and animal health or environmental pollution. However, current legal regulations only slightly affect the subject of noise of fireworks and its harmfulness. Currently, it does not seem possible to completely prohibit the use of fireworks in urban areas, but this does not mean that it is not possible to decrease the degree of their annoyance. The paper consists the issues of identification, analysis and assessment of impulsive noise of fireworks and acoustic climate during New Year’s Eve. Material presented refers to measurements of time series, frequency spectrum and values of noise parameters of selected fireworks. It was presented, among others, that the measured values exceed the criteria for occupational noise (L_Cpeak), due to the direct hazard of hearing loss, from 1.8 dB at a distance of 25 m and 6.2 dB at a distance of 15 m. Also this work discusses results of impulsive noise measurements of fireworks recorded during New Year’s Eve in years 2016-2017. Material refers to measurements at three measurement points spread over the city of Kraków. Obtained results were compared with typical noise levels for night time in urban area, indicating also the main sources of annoyance and hazard from this type of noise.

Źródło:

Archives of Acoustics; 2018, 43, 4; 697-705
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Adaptation of the power spectral density of a pseudorandom Gaussian noise to the real radio-frequency noise of the ISM band

Autorzy:

Nikonowicz, J.
Jessa, M.

Powiązania:

https://bibliotekanauki.pl/articles/114234.pdf

Data publikacji:

2018

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

radio-frequency noise measurement
ISM background noise
additive white Gaussian noise
pseudorandom noise adaptation

Opis:

Nowadays, simulation is a key part of the development and evaluation of every wireless system, while additive, white Gaussian noise (AWGN) is the basic noise model used in the created simulation models. Although the pseudorandom AWGN is the most common substitution of distortions used in the transmission models, it may differ significantly from the background noise recorded by the real radio receiver. In this paper authors present measurements of the real radio-frequency (RF) background noise of industrial, scientific and medical (ISM) band and analyze the differences between real and pseudorandom noise. The authors also propose polynomial adaptive equations that reduce the differences between pseudorandom and real RF noise power spectral densities. Using the given equations allows for better mapping of the real disturbances of the ISM band without the need for a prior noise measurements.

Źródło:

Measurement Automation Monitoring; 2018, 64, 2; 37-39
2450-2855

Pojawia się w:

Measurement Automation Monitoring

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Noise spectroscopy of resistive components at elevated temperature

Autorzy:

Stadler, A.W.
Zawiślak, Z.
Dziedzic, A.
Nowak, D.

Powiązania:

https://bibliotekanauki.pl/articles/221348.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

noise spectroscopy
low-frequency noise
resistance noise
low-frequency noise measurements
thick-film resistors

Opis:

Studies of electrical properties, including noise properties, of thick-film resistors prepared from various resistive and conductive materials on LTCC substrates have been described. Experiments have been carried out in the temperature range from 300 K up to 650 K using two methods, i.e. measuring (i) spectra of voltage fluctuations observed on the studied samples and (ii) the current noise index by a standard meter, both at constant temperature and during a temperature sweep with a slow rate. The 1/f noise component caused by resistance fluctuations occurred to be dominant in the entire range of temperature. The dependence of the noise intensity on temperature revealed that a temperature change from 300 K to 650 K causes a rise in magnitude of the noise intensity approximately one order of magnitude. Using the experimental data, the parameters describing noise properties of the used materials have been calculated and compared to the properties of other previously studied thick-film materials.

Źródło:

Metrology and Measurement Systems; 2014, 21, 1; 15-26
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Hałas drogowy jako ograniczenie możliwości zagospodarowania przestrzennego na wybranych przykładach
Road noise as a limiting factor in spatial management projects based on selected examples

Autorzy:

Podawca, Konrad

Powiązania:

https://bibliotekanauki.pl/articles/447164.pdf

Data publikacji:

2014-03

Wydawca:

Instytut Rozwoju Miast

Tematy:

hałas
ekrany akustyczne
hałas drogowy
noise
noise barriers
road noise

Opis:

W artykule poruszono problem ciągle wzrastającego zagrożenia hałasem w miastach. Skupiono się na hałasie drogowym, którego największe oddziaływanie występuje na terenach aglomeracji. Zagadnienie zobrazowano na wybranych terenach w Warszawie w granicach, w których były realizowane lub są projektowane ulice o dużym natężeniu ruchu. Problem ukazano w odniesieniu do zmian dopuszczalnych poziomów hałasu, które nastąpiły w październiku 2012 r.
The paper addresses the issue of the increasing threat of noise in cities. The focus here is on road noise, which exerts a strong impact on metropolitan areas. The study area consists of selected areas of Warsaw with new streets characterised by large traffic volumes as well as planned streets with expected large traffic volumes. Changes in noise levels in relation to permitted noise levels were investigated for October of 2012.

Źródło:

Problemy Rozwoju Miast; 2014, 1; 5-19
1733-2435

Pojawia się w:

Problemy Rozwoju Miast

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

From the History of the Noise Control Conference

Autorzy:

Engel, Z. W.

Powiązania:

https://bibliotekanauki.pl/articles/177984.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

noise control
history of the noise control conference
noise threats

Opis:

In the article a short historical outline of noise control conferences organized in Poland is given. Those conferences with the participation of Polish specialists have been organized since 1964; since 1976 they have been evolved into International Noise Control Conferences. Silhouettes of four Polish scientists, which have made a large contribution to the noise and vibration control in Poland, are presented. Also the current state of threats by noise and vibrations have been briefly mentioned. The significance of such conferences has been emphasized.

Źródło:

Archives of Acoustics; 2010, 35, 2; 133-144
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

SUMARYCZNY POZIOM HAŁASU W OBSZARZE KAMPUSU MORASKO − REJON WYDZIAŁU NAUK GEOGRAFICZNYCH I GEOLOGICZNYCH UAM W POZNANIU
Total noise in the Morasko Campus − region Faculty of Geographical and Geological Sciences AM University in Poznań

Autorzy:

KUBIAK, JAROSŁAW

Powiązania:

https://bibliotekanauki.pl/articles/896377.pdf

Data publikacji:

2019

Wydawca:

Poznańskie Towarzystwo Przyjaciół Nauk

Tematy:

environmental noise
noise measurements
noise maps (acoustic maps)
thematic cartography

Opis:

The aim of the study was to learn the total (coming from all emitters) of the spatial distribution of noise on a fragment of the area belonging to the Morasko Campus in Poznań. The research consisted of direct measurements of the equivalent sound level (LAeq) in the field in designated positions and mapping the phenomenon. The formal requirements regarding the method of measuring noise in the external environment as well as its visualization have been observed in the work. The effect of the observations carried out was the development of a noise immission plan for the selected area illustrating the noise from all sources occurring in this area. They compared it with the road noise map developed in 2017 at the request of the City of Poznan. The measurement data was referred to the noise limit values in force in areas with teaching functions. The research used data sources from Topographic Objects Database (BDOT10k) and graphic studies made available through the Spatial Information System in Poznań.

Źródło:

Badania Fizjograficzne Seria A - Geografia Fizyczna; 2019, 10(70); 39-52
2081-6014

Pojawia się w:

Badania Fizjograficzne Seria A - Geografia Fizyczna

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Noise Characterization of Differential Multi-Element Multiport Networks : the Wave Approach

Autorzy:

Dobrowolski, J. A.

Powiązania:

https://bibliotekanauki.pl/articles/226146.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

differential networks
differential noise figure
noise waves
noise correlation matrix

Opis:

In this paper there is presented and discussed a general analysis method for noise characterization of noisy multi-element multiport differential networks. It is based on mixed mode, differential and common mode, noise waves representation of noise, generalized mixed-mode scattering parameters and generalized mixed-mode noise wave correlation parameters for the network. There are derived analytical relation between the noise figure for a given output port and the noise matrix and the scattering parameters of the network, as well as the correlations between the input port noise waves. The signal to noise ratio degradation factor is derived and discussed, too. Presented results can be implemented directly in a CAD software for noise analysis of differential microwave multi-element multiport networks with differential as well as with conventional single ended ports.

Źródło:

International Journal of Electronics and Telecommunications; 2015, 61, 4; 395-401
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Differential Noise Figure and Gain De-Embedding : the Wave Approach

Autorzy:

Dobrowolski, J. A.

Powiązania:

https://bibliotekanauki.pl/articles/226126.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

noise figure
differential noise figure
differential noise figure de-embedding

Opis:

The paper presents complete analysis of differential amplifier noise figure single-ended measurement setup. The analysis is based on scattering matrix representation for the network and wave representation for noise. As a result, there are presented equations allowing the differential amplifier gain and noise figure to be de-embedded with single-ended measurements. De-embedding equations are given for the balanced amplifier and for the fully differential amplifier.

Źródło:

International Journal of Electronics and Telecommunications; 2016, 62, 1; 65-69
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Use of Acoustic Camera for Noise Sources Localization and Noise Reduction in the Industrial Plant

Autorzy:

Fiebig, Wiesław
Dąbrowski, Damian

Powiązania:

https://bibliotekanauki.pl/articles/178071.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

noise source localization
noise reduction
industrial noise control
acoustic camera

Opis:

The paper presents results of the localization of main noise sources in the industrial plant. Identification of main noise sources was made with an acoustic camera using Beamforming Method. Parallel to the measurements by means of the acoustic camera, sound level measurements on the main noise sources have been performed. Based on the calculations, prediction regarding the noise emission at residential buildings located near to the plant has been determined. Acoustic noise maps have been performed with LEQ Professional software, which includes the 3D geometry of the buildings inside the plant. It has been established that, after introduction of noise reduction measures in the plant, the noise levels at the observation points in the residential area meets the limit values.

Źródło:

Archives of Acoustics; 2020, 45, 1; 111-117
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

The adaptation of noise-induced temporary hearing threshold shift predictive models for modelling the public health policy

Autorzy:

Dudarewicz, Adam
Pawlaczyk-Łuszczyńska, Małgorzata
Zaborowski, Kamil
Pontoppidan, Niels H.
Wolniakowska, Anna
Bramsløw, Lars
Christensen, Jeppe H.
Katrakazas, Panagiotis
Brdaric, Dario
Samardžić, Senka
Śliwińska-Kowalska, Mariola

Powiązania:

https://bibliotekanauki.pl/articles/2197834.pdf

Data publikacji:

2023-03-02

Wydawca:

Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi

Tematy:

noise
noise-induced hearing loss
noise exposure
public health policy
temporary threshold shift
entertainment noise

Opis:

Objectives It has been shown that monitoring temporary threshold shift (TTS) after exposure to noise may have a predictive value for susceptibility of developing permanent noise-induced hearing loss. The aim of this study is to present the assumptions of the TTS predictive model after its verification in normal hearing subjects along with demonstrating the usage of this model for the purposes of public health policy. Material and Methods The existing computational predictive TTS models were adapted and validated in a group of 18 bartenders exposed to noise at the workplace. The performance of adapted TTS predictive model was assessed by receiver operating characteristic (ROC) analysis. The demonstration example of the usage of this model for estimating the risk of TTS in general unscreened population after exposure to loud music in discotheque bars or music clubs is provided. Results The adapted TTS predictive model shows a satisfactory agreement in distributions of actual and predicted TTS values and good correlations between these values in examined bartenders measured at 4 kHz, and as a mean at speech frequencies (0.5–4 kHz). An optimal cut-off level for recognizing the TTS events, ca. 75% of young people (aged ca. 35 years) may experience TTS >5 dB, while <10% may exhibit TTS of 15–18 dB. Conclusions The final TTS predictive model proposed in this study needs to be validated in larger groups of subjects exposed to noise. Actual prediction of TTS episodes in general populations may become a helpful tool in creating the hearing protection public health policy. Int J Occup Med Environ Health. 2023;36(1):125–38

Źródło:

International Journal of Occupational Medicine and Environmental Health; 2023, 36, 1; 125-138
1232-1087
1896-494X

Pojawia się w:

International Journal of Occupational Medicine and Environmental Health

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Seasonal Change and Spatial Distribution of Traffic Noise in Seferihisar, Turkey

Autorzy:

Say, N.
Ökten, S. Ö.
Aysu, A.
Yalçinkaya, N. M.

Powiązania:

https://bibliotekanauki.pl/articles/176295.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

noise map
IDW
GIS
traffic noise

Opis:

In this study, traffic noise in Seferihisar, which is a holiday resort by the Aegean Sea in the West of Turkey, was investigated. The noise occurring in summer and winter, on weekdays, and at weekends was mapped separately. Besides, land uses exposed to traffic noise were specified. In the carried out method, the land uses were primarily mapped by using the satellite images of the study area. Then, the noise was measured at 46 points during ten days in summer and winter, on weekdays and at weekends, and it was mapped by using Inverse Distance Weighting (IDW) method and by means of Geographic Information System (GIS) techniques. The measurements were taken in the daytime (07:00-19:00), in the evening (19:00-23:00), and at night (23:00-07:00) as stated in the Turkish Regulation of Assessment and Management of Environmental Noise. Since the time interval of the daytime measurements was large, the noise was measured in three different periods for the daytime measurements. In the formation of noise maps, logarithmic averages of all measurements taken at each point were used. The noise maps were overlapped with the land use maps by the help of the GIS techniques; the land use affected by the noise was analyzed. The results showed that the road traffic noise varied from summer to winter seasons in the study area depending on heavy or light traffic. The noise occurring in summer showed an increase both on weekdays and at weekends. While the limit value was exceeded in 49 of the measurement averages taken in winter, the limit value was exceeded in 96 measurements taken in summer. The noise maps formed according to the IDW method displayed that the areas in which the limit value was exceeded in the daytime in summer took up 14.27% of the study area while this rate went down to 4.06% in winter. The study area is one of the most important destinations for summer holiday. 20.12% of the area that exceeded the limit value in summer was builtup and 10.69% of them was tourism area. The noise together with population and traffic that increase in summer season is an important environmental problem against which some precautions should be taken. The findings of the study present significant results which might guide local governments in preventing and managing the noise.

Źródło:

Archives of Acoustics; 2017, 42, 4; 631-642
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Pseudo-Noise Waveform Design Minimizing Range and Doppler Masking Effect

Autorzy:

Kulpa, J. S.
Misiurewicz, J.

Powiązania:

https://bibliotekanauki.pl/articles/226260.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

noise radar
noise SAR
waveform design

Opis:

Noise radar is a very promising technology offering advantages which cannot be achieved in classical radar systems. Unfortunately, it has also several disadvantages. One of the most significant is the masking effect, where strong objects raise the noise floor preventing detection of weak ones and significantly affecting dynamic range. In this article method of designing waveform with reduced noise floor is presented.

Źródło:

International Journal of Electronics and Telecommunications; 2011, 57, 3; 359-362
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Design of Optimal Noise Hazard Control Strategy With Budget Constraint

Autorzy:

Monazzam, M. R.
Fard, S. M. B.

Powiązania:

https://bibliotekanauki.pl/articles/90404.pdf

Data publikacji:

2011

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

noise control strategy
noise hazard
optimization

Źródło:

International Journal of Occupational Safety and Ergonomics; 2011, 17, 4; 463-464
1080-3548

Pojawia się w:

International Journal of Occupational Safety and Ergonomics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

The Research on Impulsive Events in Railway Noise Generated During Passage Through a Railroad Switch

Autorzy:

Kukulski, B.
Wszołek, T.

Powiązania:

https://bibliotekanauki.pl/articles/176326.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

impulsive noise
railway noise measurements
impulsiveness

Opis:

This paper presents the result of research on the impulsive components of a railway noise generated during passage through a railroad switch compared with a typical rail noise and evaluation of this phenomenon with particular emphasis on impulsive sounds. The study includes the analysis of the source of impulsive components in the railway noise, the methodology of measurement and data analysis. Spectral analysis of typical fragments passing through a railroad switch is given together with a proposal of additional indicators to assess the noise. Authors propose three descriptors of the impulsive noise such as spectral centroid, kurtosis and impulsiveness, and show that these descriptors can be useful in assessment of the impulsive noise generated during trains’ crossing.

Źródło:

Archives of Acoustics; 2017, 42, 3; 441-447
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Analysis of the Grid Sampling Method for Noise Mapping

Autorzy:

Gómez Escobar, V.
Barrigón Morillas, J. M.
Rey Gozalo, G
Vilchez-Gómez, R.
Carmona del Rio, J.
Méndez Sierra, J. A.

Powiązania:

https://bibliotekanauki.pl/articles/176666.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

grid method
noise mapping
urban noise

Opis:

The grid method is the most widely used technique for measurement-based noise assessment, and indeed is part of the ISO 1996-2 standard. Nevertheless it has certain disadvantages. The present work is an analysis of the grid method for evaluating noise, firstly in the city of C´aceres and, secondly in two other smaller towns. Using as reference a 200 metre grid study, a study was made of the effect of varying the size and form of the grid on the city’s overall noise value, the percentage of data found to lie above some reference thresholds, and the noise value assigned to a certain zone of the city. The ISO 1996 recommendations of the necessity of new sampling points and the method’s predictive capacity for these new measurements were also analyzed.

Źródło:

Archives of Acoustics; 2012, 37, 4; 499-514
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Analysis of Acoustic Environment on Premises of Nursery Schools in Wrocław

Autorzy:

Rudno-Rudzińska, B.
Czajkowska, K.

Powiązania:

https://bibliotekanauki.pl/articles/178016.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

nursery schools
noise exposure
noise rating

Opis:

The aim of this project was to create a ranking of the nursery schools in Wrocław with regard to the quality of the acoustic environment on their premises, using a specially developed evaluation methodology. Each nursery school was rated according to an adopted grading scale on the basis of the noise level distribution on the playground and on the nursery school building facades. Using the grading scale one can classify nursery school premises into twelve categories characterized by different acoustic environment quality, from exceptionally good (< 45 dB) to exceptionally bad (> 70 dB). The appropriately rescaled data from the acoustic map of Wrocław and the authors’ own measurements and simulation analyses were used. The developed methodology was verified by comparing the ratings yielded by it with those determined on the basis of field measurements and simulation studies, carried out for several selected nursery schools. The paper presents the results of an acoustic environment quality assessment carried out, using the developed investigative methodology, for 118 nursery schools located in Wrocław.

Źródło:

Archives of Acoustics; 2010, 35, 2; 245-252
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Zagrożenie hałasem impulsowym wytwarzanym w przemyśle oraz podczas strzałów i eksplozji
Threat posed by impulse noise produced by the industry and during explosions

Autorzy:

Młyński, R.
Żera, J.
Kozłowski, E.

Powiązania:

https://bibliotekanauki.pl/articles/179685.pdf

Data publikacji:

2012

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

hałas
hałas impulsowy
noise
impulsive noise

Opis:

Hałas impulsowy jest zagrożeniem dla słuchu występującym na wielu stanowiskach pracy, najczęściej związanych z obróbką metali oraz w obecności wystrzałów bądź eksplozji. Należy mieć na uwadze, że w przypadku silnych impulsów istnieje możliwość spowodowania trwałego ubytku słuchu nawet po jednej ekspozycji. W artykule przedstawiono właściwości hałasu impulsowego wytwarzanego przez 37 źródeł hałasu typowych dla przemysłu i zastosowań militarnych. Obliczono też liczbę minut lub dopuszczalną liczbę strzałów/eksplozji, na jakie mógłby być eksponowany pracownik na określonym stanowisku pracy.
Impulse noise encountered at workplaces, usually related to either metal processing or gunshots and explosions, is a threat to hearing. It should be noted that strong impulses can induce a hearing loss even if caused by a single exposure. The article discusses properties of impulse noise generated by 37 sources typically found in the industry or at the military. The number of minutes and the admissible number of either gunshots or explosions towards which an employee might be exposed at a certain workstation was calculated and provided.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2012, 3; 22-25
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Hałas infradźwiękowy na stanowiskach pracy kierowców
Infrasonic noise at workstations of drivers of road vehicles

Autorzy:

Kaczmarska, A.
Augustyńska, D.
Wierzejski, A.

Powiązania:

https://bibliotekanauki.pl/articles/180325.pdf

Data publikacji:

2006

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

hałas
hałas infradźwiękowy
noise
infrasonic noise

Opis:

Hałas infradźwiękowy stanowi istotną uciążliwość w środowisku pracy kierowców. W artykule przedstawiono schemat ideowy badań oraz wstępne wyniki badań hałasu infradźwiękowego występującego na stanowiskach pracy kierowców środków transportu drogowego.
Infrasonic noise is one of the most harmful and annoyance factors in the working environment of drivers. This article presents a general diagram and preliminary results of a study of infrasonic noise that occurs at workstations of drivers of road vehicles.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2006, 10; 6-8
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Creating Acoustic Maps Employing Supercomputing Cluster

Autorzy:

Czyżewski, A.
Kotus, J.
Szczodrak, M.

Powiązania:

https://bibliotekanauki.pl/articles/177400.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

noise pollution
acoustic noise monitoring
noise propagation model
supercomputing
acoustic maps

Opis:

The implemented online urban noise pollution monitoring system is presented with regard to its conceptual assumptions and technical realization. A concept of the noise source parameters dynamic assessment is introduced. The idea of noise modeling, based on noise emission characteristics and emission simulations, was developed and practically utilized in the system. Furthermore, the working system architecture and the data acquisition scheme are described. The method for increasing the speed of noise map calculation employing a supercomputer is explained. The practical implementation of noise maps generation and visualization system is presented, together with introduced improvements in the domain of continuous noise monitoring and acoustic maps creation. Some results of tests performed using the system prototype are shown. The main focus is put on assessing the efficiency of the acoustic maps created with the discussed system, in comparison to results obtained with traditional methods.

Źródło:

Archives of Acoustics; 2011, 36, 2; 395-418
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Rozwiązania ograniczające hałas uderzeniowy prasy mechanicznej
Solutions reducing press impact noise

Autorzy:

Sikora, J.
Kosała, K.

Powiązania:

https://bibliotekanauki.pl/articles/181280.pdf

Data publikacji:

2002

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

hałas
ochrona przed hałasem
hałas uderzeniowy
noise
noise protection
impact noise

Opis:

W artykule przedstawiono opracowane, zaprojektowane i wdrożone do prasy doświadczalnej zabezpieczenie przeciwhałasowe zmniejszające emisję hałasu uderzeniowego prasy mechanicznej z ręczną lub półautomatyczną obsługą. Zaprezentowane rozwiązania ograniczają z dobrym skutkiem hałas uderzeniowy, zarówno podczas procesu wykrawania jak i tłoczenia, nie utrudniając przy tym obsługi prasy. Po dokonaniu niewielkich modyfikacji, mogą być adaptowane do innego typu pras z ręczną obsługą. Zaprezentowane rozwiązania ograniczają z dobrym skutkiem hałas uderzeniowy, zarówno podczas procesu wykrawania jak i tłoczenia, nie utrudniając przy tym obsługi prasy. Po dokonaniu niewielkich modyfikacji, mogą być adaptowane do innego typu pras z ręczną obsługą.
The paper presents material-construction solutions reducing impact noise emission in a mechanical press. Results of noise measurements after practical application of noise protections are described.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2002, 4; 21-24
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Noise emissions test from the communication route – a case study
Badania emisji hałasu z ciągu komunikacyjnego – studium przypadku

Autorzy:

Profaska, M.

Powiązania:

https://bibliotekanauki.pl/articles/113017.pdf

Data publikacji:

2013

Wydawca:

STE GROUP

Tematy:

traffic noise
noise studies
noise nuisance
hałas
badania hałasu
uciążliwości hałasu

Opis:

The publication presents a study on the issue of noise from the communication route al. W. Korfantego in Zabrze in 2012 in aspect of noise nuisance. The results were related to measurements made in 2011, in the context of the amendment of the Minister of Environment of 14 June 2007 on the levels of environmental noise. It also presents the method of calculating noise barriers by Maekawy.
W publikacji przedstawiono badania emisji hałasu z ciągu komunikacyjnego al. W. Korfantego w Zabrzu w roku 2012 w aspekcie uciążliwości akustycznej. Wyniki badań odniesiono do pomiarów wykonanych w 2011 roku w aspekcie nowelizacji Rozporządzenie Ministra Środowiska z dnia 14 czerwca 2007 r. w sprawie dopuszczalnych poziomów hałasu w środowisku. Przedstawiono również obliczenia ekranów akustycznych metodą Maekawy.

Źródło:

Systemy Wspomagania w Inżynierii Produkcji; 2013, 1 (3); 126-134
2391-9361

Pojawia się w:

Systemy Wspomagania w Inżynierii Produkcji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Review of research results concerning the modelling of shipping noise

Autorzy:

Yan, Xiaowei
Song, Hao
Peng, Zilong
Kong, Huimin
Cheng, Yipeng
Han, Linjiang

Powiązania:

https://bibliotekanauki.pl/articles/1573577.pdf

Data publikacji:

2021

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

shipping noise
noise source level model
measurement standard
ocean ambient noise

Opis:

The effect of underwater radiated noise (URN) pollution (produced by merchant ships) on marine ecology has become a topic of extreme concern for both the academic community and the general public. This paper summarises some research results and modelling about shipping noise published over several decades, which comprises the research significance of low-frequency ambient noise and shipping noise, shipping noise source levels (SL), empirical models and the measurement standards of shipping noise. In short, we try to present an overall outline of shipping noise and ocean ambient noise for related research.

Źródło:

Polish Maritime Research; 2021, 2; 102-115
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

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

/5

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Skocz do pozycji: 37.

Tytuł:

Katalog przemysłowych zabezpieczeń przed hałasem infradźwiękowym i niskoczęstotliwościowym
Catalogue of noise control measures in low frequency range

Autorzy:

Kaczmarska, A.
Augustyńska, D.
Engel, Z.

Powiązania:

https://bibliotekanauki.pl/articles/181243.pdf

Data publikacji:

2002

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

hałas
hałas infradźwiękowy
hałas niskoczęstotliwościowy
noise
infrasound noise
low frequency noise

Opis:

Artykuł przedstawia katalog wybranych przemysłowych zabezpieczeń przed hałasem infradźwiękowym i niskoczęstotliwościowym. Przedstawiono parametry akustyczne materiałów, wyrobów i elementów stosowanych do ochrony przed hałasem niskoczęstotliwościowym.
This paper shall be presented catalogue of industrial noise control measures in low frequency range. Acoustic properties of the materials, goods and structures designed to protect from low frequency noise have bean determined in this paper.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2002, 6; 24-25
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

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

/5

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Skocz do pozycji: 39.

Tytuł:

Assessment of Role of Job Components and Individual Parameters on the Raised Blood Pressure in a Noisy Industry

Autorzy:

Abbasi, Milad
Farhang-Dehghan, Somayeh
Yazdanirad, Saeid
Mehri, Ahmad
Kolahdouzi, Malihe
Fallah Madvari, Rohollah
Akbarzadeh, Arash
Ghaljahi, Maryam

Powiązania:

https://bibliotekanauki.pl/articles/177433.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

noise exposure
noise annoyance
noise sensitivity
triglyceride
cholesterol
raised blond pressure

Opis:

The present study aimed to determine the role of job components and individual parameters on the raised blood pressure among male workers of textile industry who were exposed to continuous high noise level. Information of all eligible subjects including demographic and individual characteristics, medical history and job characteristics were obtained by direct interview and referring to the medical records. All blood pressure measurements were done using mercury sphygmomanometer in the morning before work. The 8-hours equivalent A-weighted sound pressure level, the level of blood cholesterol and triglyceride, and noise annoyance was determined for each worker. As the result of weighted regression in path analysis (direct effect), only the work shift did not have a significant effect on blood pressure among the studiem variables. It can be seen that variables including the level of triglyceride, cholesterol, and noise exposure have the most direct effects on blood pressure. The results of total effects showed that variables, including using the hearing protection device, age, work experience and visibility of sound source, did not have a significant effect on blood pressure. The results of this study indicate that occupational noise exposure alone and combined with other job components and individual parameters is associated with raised blond pressure. However, noise exposure was probably a stronger stressor for increased blood pressure.

Źródło:

Archives of Acoustics; 2019, 44, 3; 575-584
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Traffic Noise and its Impact on Wellness of the Residents in Sambalpur City – a Critical Analysis

Autorzy:

Sahu, Alekh Kumar
Nayak, Satish Kumar
Mohanty, Chitta Ranjan
Pradhan, Prasanta Kumar

Powiązania:

https://bibliotekanauki.pl/articles/1953465.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

traffic noise
equivalent continuous noise level
annoyance
wellness
noise exposure index

Opis:

Noise is unwanted sound judged to be unpleasant, loud or disruptive to hearing. Like air pollution, noise pollution is one of the serious matters of concern in urban areas. Noise pollution occurs when noise level exceeds certain limit and has deleterious effects on human health and wellness. The major sources of noise pollution are industries, road traffic, railways, airplane traffic and social celebrations. The traffic noise is notably high in cities due to higher density of population, frequent movement of people, good transport system coupled with increasing numbers of vehicles (on road). In this work, the assessments of traffic noise in Sambalpur city is presented. Twelve important locations were chosen for the assessment. Noise contours were drawn to visualize the spreading of traffic noise into its surroundings. At the same time, the effect of noise pollution on wellness of the exposed people was studied. The study shows that the traffic noise level and its effects, are both in an alarming stage in the city.

Źródło:

Archives of Acoustics; 2021, 46, 2; 353-363
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Pomiar tła akustycznego w środowisku – studium przypadków
Measurement of Background Noise in the Environment – Cases Studies

Autorzy:

Zagubień, A.

Powiązania:

https://bibliotekanauki.pl/articles/1813747.pdf

Data publikacji:

2018

Wydawca:

Politechnika Koszalińska. Wydawnictwo Uczelniane

Tematy:

tło akustyczne
hałas środowiskowy
pomiar hałasu
propagacja hałasu
background noise
environmental noise
noise measurements
noise propagation

Opis:

W artykule poddano analizie wybrane przypadki pomiaru tła akustycznego wokół instalacji będących źródłem hałasu przemysłowego. Tło akustyczne to wszystkie dźwięki występujące w środowisku poza ocenianą instalacją. Wyłączając ocenianą instalację np. zakład przemysłowy lub farmę wiatrową możemy zarejestrować poziom tła akustycznego. Metodyki referencyjne zalecają by pomiar tła akustycznego odbywał się w tym samym punkcie i w tym samym czasie odniesienia pory dziennej lub nocnej (w tej samej dobie pomiarowej) co zasadniczy pomiar imisji hałasu. W artykule omówione zostały dwa szczególne przypadki sposobu pomiaru tła akustycznego wraz z uzasadnieniem. Pierwszy przypadek to zakład przemysłowy o pracy ciągłej znajdujący się w otoczeniu innych zakładów, drugi to pomiar wokół farmy wiatrowej. W pierwszej przedstawionej sytuacji pomiarowej różnice w sposobie pomiaru tła akustycznego wpływały istotnie na ocenę klimatu akustycznego. Wynika z tego, że analiza hałasu na terenach chronionych akustycznie powinna zostać przeprowadzona łącznie dla wszystkich zakładów będących w otoczeniu punktu pomiarowego. Zaproponowano odstępstwo od zalecanej metodyki pomiaru i wykonano pomiar tła akustycznego w innym terminie niż pomiar imisji hałasu łącznie z tłem. Niezależnie od przedstawionych w artykule wątpliwości należy uznać, że w przypadkach uzasadnionych merytorycznie niezbędne są odstępstwa od zalecanych metod pomiarowych. Instalacją emitującą hałas, dla której pomiar tła akustycznego powinien być wykonywany bezwzględnie w tym samym punkcie pomiarowym i w tym samym czasie odniesienia co pomiar zasadniczy jest farma wiatrowa. Wynika to ze znacznej zmienności w czasie kierunku i prędkości wiatru. Pomiar tła akustycznego w punktach pomiaru zasadniczego, ale po wyłączeniu farmy wiatrowej pozwala na ustalenie rzeczywistego równoważnego poziomu dźwięku. Jedyną trudnością podczas tak prowadzonych pomiarów jest konieczność odpowiedniego doboru terminu wykonania pomiarów tj. z uwzględnieniem prędkości i kierunku wiatru. Uzyskanie wyników pomiarów dla propagacji fali dźwiękowej od źródła do punktu odbioru z wiatrem, wymaga wielokrotnych pomiarów. Uzasadnionym postępowaniem w przypadku badań prowadzonych wokół farm wiatrowych jest wykonanie pomiarów dla przynajmniej czterech różnych kierunków wiatru N, S, E i W we wszystkich punktach pomiarowych. Podczas prowadzonych pomiarów kontrolnych nie należy kierować się czynnikiem ekonomicznym, lecz poprawnością oceny wpływu farmy wiatrowej na środowisko. Konieczność wyłączenia turbin wiatrowych na czas kilku pomiarów tła akustycznego szczególnie w porze nocnej, to zaledwie strata kilku godzin w produkcji energii.
The article analyses selected cases of background noise measurement in the vicinity of installations which constitute sources of industrial noise. The background noise refers to all sounds occurring in the environment outside the installation which is undergoing evaluation. By means of excluding the aforementioned installation, e.g. an industrial plant or a wind farm, one is able to register the background noise level. The reference methodologies recommend that the background noise measurement should take place at the same location and at the same reference time of day or night (during the same measurement day) as the fundamental measurement of noise immission. The article discusses two specific cases of background noise measurement methods and provides justification for both of them. The first case is an industrial plant operating in a continuous manner located in the vicinity of other plants, the second one – a measurement around a wind farm. In the first of the presented measurement situations, the differences in the method of background noise measurement employed significantly influenced the assessment of the acoustic environment. As a result, the analysis of noise levels in acoustically protected areas should be carried out jointly for all plants being located in the vicinity of the measuring point. A deviation from the recommended measurement methodology was proposed and the background noise measurement was conducted at a different time than the measurement of the noise immission together with the background. Regardless of the doubts presented in the article, it should be recognized that in substantively justified instances, deviations from the recommended measurement methods are required. Noise emitting installations, for which background noise measurement should unconditionally be carried out at the same measurement point and at the same reference time as the main measurement, are wind farms. This is due to significant variability in wind direction and velocity over time. Background noise measurement at the main measurement points, after the wind farm is switched off, allows to determine the actual equivalent sound level. The only difficulty during such measurements is the need to select an appropriate date of measurements, i.e. to take the velocity and direction of the wind into account. Obtaining measurement results for sound wave propagation through air requires multiple measurements. A reasonable course of action in wind farm research is to conduct measurements of at least four different wind directions (N, S, E, and W) at all measuring points. While conducting control measurements, one should not be guided by the economic factor but by the correctness of the assessment of the impact of the wind farm on the environment. The necessity of switching wind turbines off for the time which is needed to conduct a few measurements of background noise, especially at night, results in a loss of just a few hours of energy production.

Źródło:

Rocznik Ochrona Środowiska; 2018, Tom 20, cz. 2; 1498-1514
1506-218X

Pojawia się w:

Rocznik Ochrona Środowiska

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Multimedialny System Monitorowania Hałasu
Multimedia Noise Monitoring System

Autorzy:

Czyżewski, A.
Kotus, J.
Kostek, B.
Szczodrak, M.

Powiązania:

https://bibliotekanauki.pl/articles/180743.pdf

Data publikacji:

2007

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

hałas
zagrożenie hałasem
system monitorowania hałasu
pomiary hałasu
psychoakustyczny dozymetr hałasu
noise
noise pollution
noise monitoring system
noise measurements
psychoacoustic noise dosimetry

Opis:

W artykule przedstawiono Multimedialny System Monitorowania Hałasu. Projekt jest sieciocentrycznym systemem dedykowanym monitorowaniu zagrożeń hałasem. Jego nadrzędnym celem jest zwiększenie skuteczności w zakresie profilaktyki chorób słuchu. Umożliwia pobieranie, gromadzenie, analizę i wizualizację danych dotyczących hałasu, pobieranych ze zdalnych urządzeń pomiarowych oraz elektronicznych ankiet dostępnych przez Internet. Ponadto w artykule przedstawiono autorską koncepcję psychoakustycznego dozymetru hałasowego. Dozymetr ten umożliwia wyznaczenie czasowego przesunięcia progu słyszenia podczas trwania ekspozycji na hałas. Możliwe jest dzięki temu ciągłe monitorowanie progu słyszenia osób przebywających w warunkach szkodliwego oddziaływania hałasu.
A concept and an implementation of a multimedia computer system for monitoring environmental noise threats is presented. The principal aim of the project was to improve the effectiveness of prophylaxis of hearing diseases. The system makes it possible to receive, store, analyze and visualize noise data coming from noise measurement equipment and from electronic questionnaires accessible through the Internet. Moreover a new concept of psychoacoustic noise dosimetry is also presented. The designed noise dosimeter can assess temporary threshold shift (TTS) during noise exposure. In this way it is possible to monitor the hearing threshold shift continuously for people exposed to harmful noise.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2007, 7/8; 8-11
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Initial assumptions for the system of automatic detection and classification of aircraft noise events

Autorzy:

Bukała, Michał
Nowoświat, Artur
Chyla, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/2202414.pdf

Data publikacji:

2022

Wydawca:

Politechnika Poznańska. Instytut Mechaniki Stosowanej

Tematy:

aircraft noise
noise monitoring
noise detection
hałas lotniczy
monitoring hałasu
wykrywanie hałasu

Opis:

The present study undertakes the development and implementation of an algorithm for an automatic separation of acoustic events related to aircraft flights. The data are provided by noise monitoring stations operating as part of multi-point continuous noise measurement systems around small and medium-sized airports and helicopter landing sites in Poland. The article presents initial assumptions of the developed method based on the conclusions of the research. For this purpose, two different methods of airborne noise signal detection will be discussed. The first method is based on the analysis of the value of the changing rate of the signal being the difference between the value of the analysed sample and the value of the h-th previous sample of the recorded sound level time history. The second method uses a convolutional neural network operating on values recorded in 1/3-octave bands. The objective of the study is to examine the effectiveness and limitations of the selected methods on the collected representative input data.

Źródło:

Vibrations in Physical Systems; 2022, 33, 2; art. no. 2022208
0860-6897

Pojawia się w:

Vibrations in Physical Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

Dobór warstwowych zabezpieczeń przeciwhałasowych - wytyczne dla projektantów
Choosing good layer noise protections – guidelines for designers

Autorzy:

Kaczmarska, A.
Engel, Z.
Sikora, J.

Powiązania:

https://bibliotekanauki.pl/articles/179916.pdf

Data publikacji:

2005

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

hałas
ochrona przed hałasem
hałas niskoczęstotliwościowy
noise
noise protection
low-frequency noise

Opis:

Hałas niskoczęstotliwościowy jest zwykle bardzo słabo redukowany przez typowe zabezpieczenia przeciwhałasowe. W artykule przedstawiono wyniki badań dotyczące izolacyjności akustycznej elementów budowlanych warstwowych zabezpieczeń przeciwhałasowych w zakresie niskich częstotliwości oraz zalecenia dla projektantów dotyczące prawidłowego doboru warstwowych zabezpieczeń przeciwhałasowych w tym zakresie.
Low-frequency noise is not normally much reduced with conventional noise protections. This paper presents the results of investigations of the sound insulation of building elements in layer noise protections in the low-frequency range. It also presents guidelines for designers regarding a good choice of layer noise protection in this range.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2005, 6; 10-13
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Hałas w szkołach (1) - przegląd badań
Noise at school - a review of research (1)

Autorzy:

Augustyńska, D.
Radosz, J.

Powiązania:

https://bibliotekanauki.pl/articles/179947.pdf

Data publikacji:

2009

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

hałas
zagrożenie hałasem
poziom hałasu
badania
noise
noise pollution
noise level
testings

Opis:

W pierwszej części artykułu przedstawiono przegląd wybranych badań hałasu w szkołach podstawowych polskich i zagranicznych. Badania wykazały niekorzystny stan warunków akustycznych w szkołach polskich.
This article presents a review of research on noise at primary schools in Poland and abroad. It shows that the acoustic conditions in Polish schools are bad.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2009, 9; 16-19
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Ustroje rezonatorowe obniżające hałas niskoczęstotliwościowy w kabinach przemysłowych

Autorzy:

Kaczmarska, A.
Augustyńska, D.
Engel, Z.

Powiązania:

https://bibliotekanauki.pl/articles/180162.pdf

Data publikacji:

2000

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

hałas
ochrona przed hałasem
hałas niskoczęstotliwościowy
noise
noise protection
low frequency noise

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2000, 11; 14-16
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Everyday Exposure to Occupational/Non-Occupational Infrasound Noise in Our Life

Autorzy:

Zagubień, A.
Wolniewicz, K.

Powiązania:

https://bibliotekanauki.pl/articles/177101.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

infrasound
non-occupational noise exposure
noise levels

Opis:

Infrasounds are very common in the natural environment. There are various opinions about their harmfulness or lack of harmfulness. One of the reasons of increasing interest in this issue is that there are more and more wind farms appearing close to building estates which are undoubtedly a source of infrasound. It is reasonable to present the results of research of infrasound noise connected not only with wind farms. In this study own results of research of infrasound noise related to daily human activity are presented. The measurements were carried out during housework, travel to the office or shop, and during shopping. The results are shown in the form of values of equivalent levels and 1/3-octave analyses. Taking into consideration the natural sources of infrasound in the environment, the measurements were conducted during both windy and windless weather. On the basis of the results of the measurements it was possible to define the daily exposure to infrasound noise. Those results were also compared with the available in the literature threshold values sensed by people. Estimated level of exposure to noise beyond workplace together with the level of exposure to noise at work enables to define daily exposure level, which means a better assessment of risk of health loss. Increasing social awareness of acoustic threat in everyday life allows us to identify the problem and at the same time improve the quality of rest and efficiency at work.

Źródło:

Archives of Acoustics; 2016, 41, 4; 659-668
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Annoyance of Time-Varying Road-Traffic Noise

Autorzy:

Kaczmarek, T.
Preis, A.

Powiązania:

https://bibliotekanauki.pl/articles/177938.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

noise annoyance
ICBEN scale
time varying noise

Opis:

The aim of the study was to investigate how the time structure of a road-traffic affects the noise annoyance judgment. In a psychoacoustic experiment, the listeners judged noise annoyance of four road-traffic noise scenarios with identical numbers of vehicles and LAeq;T value but different time structure of a road traffic. The traffic structure varied from even to highly clustered across different scenarios. The scenarios were created in the laboratory from a large set of a single vehicle passby recordings. The scenarios were additionally filtered with filters corresponding to a typical window transfer function to simulate the situation inside the building. The experimental results showed that there is a significant difference in annoyance judgment for different traffic structures with the same LAeq;T value. The highest annoyance ratings were obtained for even traffic distribution and the most clustered distribution resulted in the lowest annoyance rating. These results correlated well with the averaged loudness, whereas the percentile loudness (N5) and level (L5) predict the opposite results.

Źródło:

Archives of Acoustics; 2010, 35, 3; 383-393
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

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Artykuł

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Skocz do pozycji: 49.

Tytuł:

Analysis of Relative Intensity to Noise Ratio for Lasers at Different Bias Currents

Autorzy:

Bhatia, K. S.
Kamal, T. S.

Powiązania:

https://bibliotekanauki.pl/articles/227128.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

relative intensity to noise ratio
intensity noise

Opis:

In this paper, we have carried out the simulative analysis for averaging out the optimal value of RIN for better performance in high bit rate optical transmission link. We have found that for single mode VCSEL, the bias of 2 mA has the highest Spurious Free Dynamic Range (SFDR) and low RIN. For multimode VCSEL, the bias of 6 mA has the highest SFDR and low RIN.

Źródło:

International Journal of Electronics and Telecommunications; 2012, 58, 3; 255-259
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

Approaches to Evaluating the Quality of Masking Noise Interference

Autorzy:

Smailov, Nurzhigit
Batyrgaliev, Askhat
Akhmediyarova, Ainur
Seilova, Nurgul
Koshkinbayeva, Madina
Baigulbayeva, Moldir
Romaniuk, Ryszard
Orunbekov, Maxat
Assem, Kabdoldina
Kotyra, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/1844611.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

noise generators
masking noises
TEMPEST
noise rating

Opis:

The paper discusses the characteristics of spatial electromagnetic noise generators, as well as the formation of a broadband noise signal. A number of well-known methods for assessing the quality of masking noise interference and the approaches used in them have been described. Approaches to the measurement of masking noise were also determined in assessing their quality. In conclusion, additional methods are proposed for assessing the quality of masking noises, such as searching for correlation of noise in different frequency sub-bands and using statistical and (or) graphical methods (tests) for randomness.

Źródło:

International Journal of Electronics and Telecommunications; 2021, 67, 1; 59-64
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

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