作　　者： ; ; ; ; ;

机构地区： 上海交通大学机械与动力工程学院振动冲击噪声国家重点实验室

出　　处： 《振动与冲击》 2005年第5期46-48,52,共4页

摘　　要： 测试不同运行速度下高速列车车厢内部噪声,并进行噪声的频谱分析。根据噪声强度主观感觉的心理声学理论,分析使用A计权和响度来评价车内噪声环境的不同,指出响度能更准确地评价车内噪声。并在此基础上提出车内降噪的频率范围。 Spectral characteristics of noises measured inside high speed train traveling at different speeds were analyzed. Based on psychoacoustical theories for the subjective sensation of sound intensity, two simple descriptors, namely the A-weighted sound level and the loudness level were used for assessing the noise environment within train. The difference between these two methods were analyzed. The results of noise assessment show that loudness gives more accurate subjective indicator for interior noise. The suitable frequency range of noise reduction is suggested.

关 键 词： 计权声压级 响度 列车 内部噪声

领　　域： [机械工程] [交通运输工程] [交通运输工程]