本发明是一种用于机动车性能检测的汽车路面噪声快速检测装置及方法。它由相互连接的信号采集单元和数据分析单元组成。信号采集单元分别连接GPS车速传感器、信号转换和采集用声压传感器、三向振动加速度传感器和数据采集模块，各传感器将采集到的不同信号转换成数字信号传递给数据采集模块。数据分析单元分别连接计算机、频谱分析模块、相干分析模块、包络分析模块和运算器，各模块通过计算机中安装的LMS TEST LAB振动噪声测试分析软件处理相关信号，实现汽车路面噪声的快速分析检测。本发明广泛适用于各类汽车的路面噪声快速检测，并且具有装置结构简单、部件配置合理、检测精度较高、检测数据重复性好的优点。
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