The window is one of the main components of the high speed train car body structure through which noise can be transmitted. To study the windows' acoustic properties, the vibration of one window of a high speed train has been measured for a running speed of 250 km/h. The corresponding interior noise and the noise in the wheel-rail area have been measured simultaneously. The experimental results show that the window vibration velocity has a similar spectral shape to the interior noise. Interior noise source identification further indicates that the window makes a contribution to the interior noise. Improvement of the window's Sound Transmission Loss (STL) can reduce the interior noise from this transmission path. An STL model of the window is built based on wave propagation and modal superposition methods. From the theoretical results, the window's STL property is studied and several factors affecting it are investigated, which provide indications for future low noise design of high speed train windows.
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机译：窗口是高速列车车身结构的主要部件之一，通过该噪音可以通过该组件传输噪音。为了研究窗口的声学特性，测量了高速列车的一个窗口的振动，用于250 km / h的运行速度。相应的内部噪声和轮轨区域中的噪声已经同时测量。实验结果表明，窗口振动速度与内部噪声具有相似的光谱形状。内部噪声源识别进一步表明窗口对内部噪声做出了贡献。改进窗口的声音传输损耗（STL）可以减少来自该传输路径的内部噪声。基于波传播和模态叠加方法构建窗口的STL模型。从理论结果来看，研究了窗口的STL财产，并研究了几个影响它的因素，这为未来的高速火车窗口的低噪声设计提供了迹象。
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