通过分析不同电机的声音信号文件，识别出电机种类。通过归一化消除了转速的影响。可以分析现有文件，也可以通过数据采集卡进行实时分析。-By analyzing the voice of the electrical signals of different documents, identify the type of motor. Through the normalized elimination of the impact speed. Can be analysis of existing documents, or data acquisition card through the real-time analysis.