IIR数字滤波器设计：利用双线变化法及脉冲响应不变法，设计IIR数字滤波器 -IIR digital filter design: the use of two-constant changes in law and the impulse response method, design of IIR digital filters

IIR数字滤波器设计:用双线变化法及脉冲响应不变法，用Matlab编程，设计低通、高通、带通IIR数字滤波器-IIR Digital Filter Design: A two-constant changes in law and the impulse response method, using Matlab programming, designing low-pass, high pass, band-pass IIR digital filter