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无限脉冲响应(IIR)数字滤波器在很多领域中有着广阔的应用。本文用Butterworth法、切比雪夫1法法、切比雪夫2法通过MATLAB仿真软件对几种给定性能的IIR数字滤波器进行了仿真设计,并用基于MOTOROLA公司的M68HC11单片机进行了硬件设计实现,表明数字滤波器具有灵活、方便、功能强的特点。
Infinite Impulse Response (IIR) digital filters have many applications in many fields. In this paper, we use Butterworth method, Chebyshev 1 method, Chebyshev 2 method to simulate several IIR digital filters with given performance by MATLAB simulation software and hardware design with M68HC11 microcontroller based on MOTOROLA company, Digital filter shows that the flexible, convenient and powerful features.