"基于MATLAB的IIR数字滤波器设计及应用研究"

The document "MATLAB-Based Design of IIR Digital Filter" provides a comprehensive guide on the design and implementation of Infinite Impulse Response (IIR) digital bandpass filters using MATLAB. In the current digital era, digital signal processing technology has gained widespread attention and has experienced rapid development alongside advancements in computer and microelectronics technologies. This technology is extensively utilized in various fields such as speech and image processing, digital communication, spectrum analysis, pattern recognition, and automatic control. Digital filters are a crucial component in digital signal processing systems and are present in almost all digital signal processing applications. Digital filtering is a fundamental processing algorithm in applications such as speech and image processing, pattern recognition, and spectrum analysis, playing a vital role in digital signal processing. The document explores the design principles of IIR digital filters and presents the implementation process using MATLAB, highlighting the significance and applicability of digital filters in various signal processing applications. Overall, the document serves as a valuable resource for individuals interested in digital signal processing, offering insights into the design and implementation of IIR digital filters using MATLAB. Through this work, the promotion and advancement of digital filter applications are facilitated, further contributing to the advancement of digital signal processing technology. Keywords: Digital Filter, IIR, MATLAB.