A review of Shinkansen noise methods for its control is given. In the process of controlling the noise, it has been found that many types of noise are generated from various parts of cars and other installations. These include rolling noise, bridge structure noise, pantograph spark noise, pantograph aerodynamic noise, other aerodynamic noise and gear noise. The countermeasures to reduce the individual noise are described. In order to control wayside noise, we must know the contribution of each noise element. For this purpose, 'microphone array' and 'parabola microphone' measurements are made. The methods of treatment of data obtained by this measuring equipment are shown, and the amount of noise generated from the individual noise source is estimated. Since aerodynamic noise is a principal part of Shinkansen noise, it is necessary to modify the car surface in order to reduce the noise. With speed increases, smoothing the car surface is essential to keep the noise low. A new pantograph producing less aerodynamic noise is being developed. By applying these methods, it is expected that the maximum speed at which the wayside noise value is less than 75 dB(A) is about 350 km/h or a little more.
Noise control of high speed Shinkansen
Lärmminderung beim Hochgeschwindigkeitszug Shinkansen
1996
16 Seiten, 15 Bilder, 2 Tabellen, 6 Quellen
Conference paper
English
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