Use MATLAB to design an FIR linear-phase filter that models a low pass band limited channel that…

Use MATLAB to design an FIR linear-phase filter that models a low pass band limited channel that has a 1/2 -dB ripple in the pass band I ƒ I ≤ 3000 Hz and a stop band attenuation of -40 dB for I ƒ I ≤ 3600. Plot the impulse response and the frequency response.