Results 201 to 210 of about 1,244,617 (252)
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Transportation Research Record: Journal of the Transportation Research Board, 1999
The Railway Noise Model (RWNM) was developed at the University of Central Florida and predicts sound levels at receivers near railway operations for analyses used in environmental documents. The RWNM is a simulation model, and trains are modeled as moving point sources of sound.
MacDonald, John M., Wayson, Roger L.
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The Railway Noise Model (RWNM) was developed at the University of Central Florida and predicts sound levels at receivers near railway operations for analyses used in environmental documents. The RWNM is a simulation model, and trains are modeled as moving point sources of sound.
MacDonald, John M., Wayson, Roger L.
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The noise factor in railway locomotives
Applied Ergonomics, 1982This article concerns the problem of acoustic work conditions on railway locomotives. The objective results of sonometric surveys in locomotive cabins are compared with subject data received from locomotive crews obtained by means of a specific questionnaire 'The Subjective Estimation of Noise'. The analysis touched 9 type of locomotives; steam, diesel
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Journal of Sound and Vibration, 1996
Abstract Strategies are much talked about, but frequently lack any substance. The general concepts of strategic planning are discussed and the need for it to have a focus, i.e., a clear objective, are emphasized. A structural approach to strategic plan development is advocated, with a definition of the relevant issues being a prerequisite for success.
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Abstract Strategies are much talked about, but frequently lack any substance. The general concepts of strategic planning are discussed and the need for it to have a focus, i.e., a clear objective, are emphasized. A structural approach to strategic plan development is advocated, with a definition of the relevant issues being a prerequisite for success.
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Multiresolution analysis of environmental noise signals: an application to railway noise
Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510), 2004The most part of acoustic signals associated to real world phenomena are non-stationary. A particularly important example is represented by signals associated to train transits, whose noise environmental impact is evaluated by considering the features associated to each of them.
CALIGIURI L. M, SABATO, Adolfo
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Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 1999
Noise has long been established as having a major influence on the overall passenger environment. Unfortunately, the processes involved are often misunderstood and consequently the acoustic environment inside many vehicles is more a result of chance than any design process.
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Noise has long been established as having a major influence on the overall passenger environment. Unfortunately, the processes involved are often misunderstood and consequently the acoustic environment inside many vehicles is more a result of chance than any design process.
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Reactions to railway noise in Denmark
Journal of Sound and Vibration, 1983Abstract People's reactions to railway noise were studied along seven Danish railway lines with traffic intensities from 30 to about 300 trains per 24 hours. The calculated sound levels varied between 43 and 71 dB(A) for LAeq,24h and between 78 and 102 sB(A) for LAmax. 615 persons were interviewed. One third of these felt strongly or somewhat annoyed
T.V. Andersen, K. Kühl, E. Relster
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Journal of Sound and Vibration, 1977
The propagation of railway noise is characterized by the typical arrangement of noise sources on a moving train. The rates of sound attenuation with distance are determined for peak levels and for the equivalent steady sound levels in the cases of omnidirectional, and directional sources.
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The propagation of railway noise is characterized by the typical arrangement of noise sources on a moving train. The rates of sound attenuation with distance are determined for peak levels and for the equivalent steady sound levels in the cases of omnidirectional, and directional sources.
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Directivity of railway noise sources
Journal of Sound and Vibration, 2006In the Harmonoise project the description of vertical and horizontal directivities of railway noise sources has been required. Other features of the source description are sound power level spectra in third octave bands as a function of speed and the physical location of the different sound sources. Based on systematic investigations methods to
Xuetao Zhang, Hans G. Jonasson
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Railway vehicle internal noise
Journal of Sound and Vibration, 1977The mechanisms by which noise reaches the passenger in a rail vehicle are discussed. A summary is given of the basis on which suitable specifications for the interior noise level in a new vehicle can be selected. Methods are described by which the acoustic performance of a rail vehicle can be assessed at the design stage.
P.W. Eade, A.E.J. Hardy
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The importance of railway noise in France
Journal of Sound and Vibration, 1979A national survey on environmental nuisances due to all forms of transport was made in France during 1977. From among the data gathered, it is possible to extract results concerning the impact of nuisance due to railways, partly from results of questionnaires and partly from results of acoustical measurements.
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