Question: Using the fir1 function in MATLAB, design a 45-tap linear-phase bandpass FIR filter with pass-band edge frequencies of 0.45π and 0.65π, stop-band edge frequencies of 0.15π and 0.9π, maximum pass-band attenuation of 0.1 dB, and minimum stop-band attenuation of 40 dB. Use the Kaiser window for your design and sketch the frequency characteristics of the resulting filter.