广州地铁一、二号线噪声状况调查

考察了乘客流量、车站公共广播等因素对广州地铁一、二号线的车站环境噪声和列车车厢内部噪声的影响，探讨了车站环境噪声的日变化趋势。结果表明：地铁列车高速运行是地铁车站环境噪声的主要噪声源，地铁车站环境噪声还与车站的广播次数、广播音量、客流量、车流量等因素有关；地铁列车车厢内噪声除了与地铁线路质量、列车运行速度及地铁列车结构有关外，还与车厢内广播次数、广播音量有密切联系；屏蔽门能有效降低噪声；地铁噪声的频率特性是以中高频噪声为主，属宽频带噪声。

Investigation on the noise status of Guangzhou Metros

Several factors including train running, public broadcasting and the number of passenger, which affected the noise of the route No.1 and No.2 of Guangzhou Metro were studied. Meanwhile, the trend of noises in a daytime was also discussed. The results indicated that the rapid running of the metro was the main source of noise, the noise of subway and the interior noises in the carriage of running train were related to the number of broadcasting, the volume of broadcasting, the number of passenger, etc. Shielding door could effectively decrease the noise. As for the frequency characteristic of the noise of Metro, it belonged to wide frequency noise.