Design of IIR Digital Filters

1. Deepen understanding of analog filter basic types, characteristics, and key design specifications; master analog prototype low-pass filter design methods; learn to design analog prototype low-pass filters using MATLAB functions such as butter, cheby1, and ellip. 2. Enhance knowledge of analog domain frequency transformation methods; master MATLAB implementation of frequency transformations using lp2hp, lp2bp, and lp2bs functions to design high-pass, band-pass, and band-stop filters. 3. Strengthen comprehension of impulse invariance method for IIR digital filter design; master MATLAB implementation of impulse response transformation through impinvar function with sampling parameter configuration. 4. Improve understanding of bilinear transformation method for IIR digital filter design; master MATLAB implementation using bilinear function with prewarping frequency compensation techniques.