基于陷波器的数字失真度仪设计

Design of Digital Signal Distortion Instrument Based on Notch Filter

各种失真度测试仪已经在电子、电力、通信等领域得到广泛的应用,但普遍存在仪器价格较高、操作繁琐、测量精度不高的缺点。文中在研究基于数字陷波滤波技术进行失真度测量的基础上,通过虚拟仪器的方式实现了数字失真度仪的设计,有效地克服了传统数字失真度测量方法中频谱泄漏对失真度测量的影响,降低了成本,具有较高的测量精度。

Various distortion meters have been widely used in many fields such as electronics, electricity and communication, and so on. However, most of these meters are rather expensive, difficult to operate and with low precision. This paper, based on the research of diginal notch filtering technique for measuring signal distortion,describes the realization of virtual instrument. This method can effectively overcome the weaknesses of spectrum leakage caused by digital method. Its cost is lower while precision is mu...