乌拉尔汽车制造厂对驾驶室内的噪声级进行了研究,并对某些隔声方案的效果作了结构试验。为了鉴定使用条件下传入驾驶室内的噪声特性和范围,按国家全苏标准(POCT)19358—74规定的行驶范围,对驾驶室内部空间各不同点的噪声进行了调查研究。驾驶室内部空间划分成方格网(如图1),网的各个结点依次装上麦克风,操纵杆和驾驶员所占的网结 The Ural automobile factory has carried on the research to the noise level in the cab, and has made the structural test to the effect of some sound insulation schemes. In order to identify the characteristics and range of noise introduced into the cab under the conditions of use, the noise at different points in the cab’s internal space was investigated according to the driving range stipulated by the POCT 19358-74. Cab interior space is divided into square grid (Figure 1), the network followed by each node fitted with a microphone, joystick and driver of the network node