Railway Sound Barrier: With the rapid economic development of China, high-speed rail has become a convenient way for people to save time. However, as the development of high-speed and intercity light rail continues, the number of high-speed and intercity light rail systems in China is also growing, revealing more and more issues. Noise pollution is one of them, and the railway sound barrier is a noise-reduction product designed and produced for the current high-speed rail systems.