该软件用于高等学校的教学工作，演示了周期信号分解与合成的过程。这一过程对于教学工作非常重要，是信号与处理、机械工程测试技术等课程的难点。-The software used for teaching colleges and universities, shows periodic signal decomposition and synthesis process. This process is very important for teaching, is the signal proce