Generates 2 sine signals with frequency f1 and f2
% Combination frequency of 2 signals
Fs=100;
t=(1:400)/Fs;
f1=1;
s1=(2/pi)sin(2pif1t);
f2=3;
s2=(2/3/pi)sin(2pif2t);
s=s1+s2;
subplot(2,1,1)
plot(t,s)
xlabel('time')
S=fft(s,512);
w=(0:255)/256*(Fs/2);
subplot(2,1,2)
plot(w,abs(S(1:256)))
xlabel('frequency')
Output
Change the value of f2 = 10, 25, 20
% Combination frequency of 2 signals
Fs=100;
t=(1:400)/Fs;
f1=1;
s1=(2/pi)sin(2pif1t);
f2=;10
s2=(2/3/pi)sin(2pif2t);
s=s1+s2;
subplot(2,1,1)
plot(t,s)
xlabel('time')
S=fft(s,512);
w=(0:255)/256*(Fs/2);
subplot(2,1,2)
plot(w,abs(S(1:256)))
xlabel('frequency'
Output F2=10
Output F2=25
Output F2=20
