# Design a fourth-order digital lowpass Chebyshev filter with a cutoff frequency of 1.5 kHz and a 0.5.

Design a fourth-order digital lowpass Chebyshev filter with a cutoff frequency of 1.5 kHz and a 0.5 dB ripple at a sampling frequency of 8,000 Hz. a. Determine the transfer function and difference equation. b. Use MATLAB to plot the magnitude and phase frequency responses.