Design of a Low-Pass Digital Filter
Design a low-pass digital filter that meets the following design specifications: passband cutoff frequency of 0.2π with 1 dB ripple, and stopband cutoff frequency of 0.3π with 15 dB attenuation. This requires developing designs using Butterworth, Chebyshev Type I, Chebyshev Type II, and elliptic filter prototypes, comparing their filter orders, actual stopband attenuation, and analyzing the experimental results. Key implementation considerations include filter type trade-offs, parameter selection methods, stability, computational complexity, and performance evaluations.