摘要
本文提出了从模拟低通原型滤波器快速设计ＩＲ数字滤波器的原理和方法，该方法用计算机设计快速简便。
This article presents a theory and method of fast designing IIR digital filter according to analog prototype filter. By using this method, times of calculation can be decreased a lot. And it is much quicker and more simple to design IIR digital filter by computer.
关键词
IIR数字滤波器
设计
数字滤波器
递推算法
IIR digital filter\ analog prototype filter\ frequency transformation\ recurrence calculation
