717 Study on Noise Source Contribution of Accelerating cars and its audibility evaluations

2005 ◽  
Vol 2005.43 (0) ◽  
pp. 269-270
Author(s):  
Shunsuke ISHIMITSU ◽  
Hidenori URATA ◽  
Jyunpei TAKEDA
Keyword(s):  
Noise Source ◽  
Source Contribution

scholarly journals Source Contribution Analysis for Exterior Noise of a High-Speed Train: Experiments and Simulations

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Jie Zhang ◽  
Xinbiao Xiao ◽  
Dewei Wang ◽  
Yan Yang ◽  
Jing Fan
Keyword(s):  
High Speed ◽  
Noise Source ◽  
High Speed Train ◽  
Noise Sources ◽  
Sound Sources ◽  
Lower Region ◽  
Source Contribution ◽  
Array Measurements ◽  
Noise Characteristics ◽  
Train Speed

This paper presents a detailed investigation into the contributions of different sound sources to the exterior noise of a high-speed train both experimentally and by simulations. The in situ exterior noise measurements of the high-speed train, including pass-by noise and noise source identification, are carried out on a viaduct. Pass-by noise characteristics, noise source localizations, noise source contributions of different regions, and noise source vertical distributions are considered in the data analysis, and it is shown how they are affected by the train speed. An exterior noise simulation model of the high-speed train is established based on the method of ray acoustics, and the inputs come from the array measurements. The predicted results are generally in good agreement with the measurements. The results show that for the high-speed train investigated in this paper, the sources with the highest levels are located at bogie and pantograph regions. The contributions of the noise sources in the carbody region on the pass-by noise increase with an increasing distance, while those in the bogie and train head decrease. The source contribution rates of the bogie and the lower region decrease with increasing train speed, while those of the coach centre increase. At a distance of 25 m, the effect of the different sound sources control on the pass-by noise is analysed, namely, the lower region, bogie, coach centre, roof region, and pantograph. This study can provide a basis for exterior noise control of high-speed trains.

Noise source contribution analysis of accelerating cars by wavelets

2004 ◽  
Vol 2004.5 (0) ◽  
pp. 273-274
Author(s):  
Shunsuke ISHIMITSU ◽  
Hiroshi KOBAYASHI
Keyword(s):  
Noise Source ◽  
Source Contribution ◽  
Contribution Analysis

118 Study on Noise Source Contribution of Accelerating cars and its subjective evaluation

2005 ◽  
Vol 2005.15 (0) ◽  
pp. 69-71
Author(s):  
Shunsuke ISHIMITSU ◽  
Norio KUBO ◽  
Hidenori URATA ◽  
Jyunpei TAKEDA
Keyword(s):  
Noise Source ◽  
Subjective Evaluation ◽  
Source Contribution

Quantum noise models for semiconductor lasers: is there a missing noise source?

1997 ◽  
Vol 44 (10) ◽  
pp. 1929-1936 ◽  
Author(s):  
A. BRAMATI, V. JOST, F. MARIN and E. G
Keyword(s):  
Semiconductor Lasers ◽  
Quantum Noise ◽  
Noise Source ◽  
Noise Models

SPATIAL DISTRIBUTION OF 1/f NOISE SOURCE

1988 ◽  
Vol 49 (C4) ◽  
pp. C4-157-C4-160 ◽  
Author(s):  
L.K.J. VANDAMME
Keyword(s):  
Spatial Distribution ◽  
Noise Source

Uncertainty of a Millimeter-Wave Variable Noise Source using a Variable Attenuator

2011 ◽  
Vol 131 (4) ◽  
pp. 302-303
Author(s):  
Hitoshi Iida ◽  
Takayuki Inaba ◽  
Yozo Shimada ◽  
Koji Komiyama
Keyword(s):  
Millimeter Wave ◽  
Noise Source ◽  
Wave Variable ◽  
Variable Attenuator
Sign in / Sign up

Export Citation Format

Share Document