Results 141 to 150 of about 108,862 (203)
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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. The user can create model objects, tracks, barriers, and receivers, using
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. The user can create model objects, tracks, barriers, and receivers, using
MacDonald, John M., Wayson, Roger L.
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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 Journal of the Acoustical Society of America, 2012
Railway tunnel portal noise is a concern in environmental impact assessment for railway projects. Railway noise is amplified inside the tunnel due to multiple reflections of highly sound reflective tunnel walls and such noise is then radiated from the tunnel portal.
Wilson HO +3 more
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Railway tunnel portal noise is a concern in environmental impact assessment for railway projects. Railway noise is amplified inside the tunnel due to multiple reflections of highly sound reflective tunnel walls and such noise is then radiated from the tunnel portal.
Wilson HO +3 more
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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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Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 1999
Although it has long been recognized that when a train passes over a bridge there is frequently an increase in noise levels, accurate prediction of this phenomenon is often neglected. Using a modified version of AEA Technology Rail's ‘re-radiated noise’ model and data on existing bridges, this paper shows how the noise from a bridge can be predicted ...
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Although it has long been recognized that when a train passes over a bridge there is frequently an increase in noise levels, accurate prediction of this phenomenon is often neglected. Using a modified version of AEA Technology Rail's ‘re-radiated noise’ model and data on existing bridges, this paper shows how the noise from a bridge can be predicted ...
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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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European cooperative on railway noise
Noise Control Engineering Journal, 2001Discussions are underway in Europe between railways and the various directorates of the European Commission with the objective of implementing European Union policy to transfer traffic from road to rail without having a detrimental effect on the noise environment next to railways.
Brian Hemsworth, Peter Hubner
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Railway noise propagation models
Journal of Sound and Vibration, 1990Abstract In this paper is presented a model to calculate the sound event level and thereby the energy equivalent level for short-distance railway noise propagation in a town. A model of the ground effects on the propagation from line sources, regarded as an incoherent superposition of point sources, is presented and discussed for spherical and ...
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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. By considering the user of the vehicles this paper shows how appropriate noise
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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. By considering the user of the vehicles this paper shows how appropriate noise
openaire +1 more source