我国既有线软卧空调客车车内噪声测试及结果分析

Interior Noise Measurement and Analysis of the Existing Line First-dass Vehicle Passenger Compartment

通过对软卧室调客车进行的车内噪声测试,并针对隧道、桥梁、坡道等不同工况下进行了1/3倍频程、FFT、声压级随时间变化等分析,提出了相应的降噪措施。为改进其车体结构,设计低噪声高速铁道车辆提供了依据。

The interior noise levels were measured for the existing line first-class vehicle passenger compartment in running. Using the analysis methods including 3tdoctave, 3rdoctave vs.t, FTT vs. t, Ievel vs. t and FFT analysis, analyze the characteristics of the interior noise of the vehicle running different lines (e. g. a tunnel, a bridge or a ramp) to table the proposals for noise reduction and to improve the structure and materials of the vehicle body and reduce the interior noise of vehicles.