Design of IIR digital filter

摘要

In the field of signal process, the real-time and rapidity requirements of signal processing become higher and higher. The filter has been used widely, such as used in detecting and predicting of the signal. Digital filter has many outstanding advantages such as high stability, high precision, design flexible, easy to implement. It can overcome the problems such as voltage drift and temperature drift and noise. With the development of digital technology, digital technology is used to implement filter function. It has gotten people's attention and been used widely.