Research on Key Technologies of Noise Reduction Effect Prediction of Railway Near-Track Sound Barriers
The prediction method of noise reduction effect of sound barrier in railway near-track environment is studied.Through ray tracing,insertion loss calculation and multipath sound wave superposition correction technology,the noise reduction performance of sound barrier is comprehensively analyzed.The field test results show that different types of sound barriers have different noise reduction effects at different heights and frequency bands,and the absorption sound barrier shows better noise reduction effect.
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