Design a 3-tap FIR lowpass filter with a cutoff frequency of 1,500 Hz and a sampling rate of 8,000 Hz using
a. rectangular window function
b. Hamming window function.
Determine the transfer function and difference equation of the designed FIR system, and compute and plot the magnitude frequency response
for Ω=0, π/4, π/2, 3π/4, and π radians.