Using MATLAB, design a bandpass filter to only pass through the signal with a frequency of f1-f2 and show how your filtered data look like (based on code written below ). Please include typed out code.

Here is my code so far:

% [1]

f1 = 100.02; t = -pi : pi/4:pi; Ysignal = 1 + 0.1*cos(2*pi*f1*t); plot(Ysignal, 'r') fft(Ysignal) s=sum(fft(Ysignal))

%[2]

f2 = 100.00; t = -pi : pi/4:pi; Yreference = 1 + cos(2*pi*f1*t); hold on; plot(Yreference, 'b') fft(Yreference) s2=sum(fft(Yreference))

%[3]

Ymix = Ysignal.*Yreference; hold on; plot(Ymix, 'm') fft(Ymix) s3=sum(fft(Ymix))