Design a lowpass FIR filter with the following specifications using MATLAB:
Number of filter taps = determined on your trials
Sampling rate =8000 Hz
Passband: 0 - 1200 Hz
Stopband 1500 - 4000 Hz
Passband ripple: 1 dB
Stopband attenuation: 40 dB
(a) Print the lowpass FIR filter coefficients and plot the frequency responses using MATLAB. Label and print your graph.
(b) Determine the ripples in both pass-, and stop bands. Identify them on your plots.