中文摘要：

设计了一种测量公交车噪声源排放的实验方案,采用实验方法对公交车的噪声源排放进行了测量。对测量数据进行统计分析,建立了考虑加、减速影响的公交车噪声源排放模型。然后通过计算得到不同行驶状态下公交车噪声的A计权等效频率,并进行了对比分析。最后分析了不同行驶状态下公交车噪声的频率分布的差异,得到了公交车噪声频率分布的若干规律。

英文摘要：

An experimental scheme for bus noise emission measuring was designed and performed. By statistical analyzing the measured data,a bus noise emission model considering the influences of acceleration and deceleration was established. Then A weighting equivalent frequency of bus noise under different driving state was calculated,and comparison and analysis were presented. Finally,the differences in the frequency distribution of bus noise under different driving state was analyzed,and several laws about bus noise frequency distribution were obtained.