这是北理工的现代数字信号处理的课件，很有用，讲述很清楚，从简入门，对初学这很有帮助，希望对大家有用-North Polytechnic modern digital signal processing courseware, useful, tells very clearly, from simple entry, and I hope this is helpful for beginners useful

振动信号处理及故障诊断的研究性论文，论文很好的介绍了现代机械故障诊断的方法及研究现状-Vibration signal processing and fault diagnosis of the research papers, the paper is a good introduction to the modern mechanical fault diagnosis methods and research status