I'm a newbie. I have a data as shown below. How to do write MATLAB code for FFT of this kind of an arbitrary signal? Thanks.
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Ray Huang
am 12 Mai 2018
Beantwortet: KALYAN ACHARJYA
am 12 Mai 2018
Time(s) Amplitude 0.707 0.707 1.401 0.694 2.104 0.703 2.803 0.699 3.497 0.694 4.183 0.686 4.869 0.686 5.575 0.706 6.288 0.713 7.007 0.719 7.711 0.704 8.401 0.69 9.098 0.697 9.8 0.702 10.505 0.705 11.192 0.687 11.876 0.684
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KALYAN ACHARJYA
am 12 Mai 2018
% Are you looking for this one
amplitude=[ 0.707 0.694 0.703 0.699 0.694 0.686 0.686 0.706 0.713 0.719 0.704 0.69 0.697 0.702 0.705 0.687 0.684];
t=[0.707 1.401 2.104 2.803 3.497 4.183 4.869 5.575 6.288 7.007 7.711 8.401 9.098 9.8 10.505 11.192 11.876];
%nfft=; % Length of FFT);
subplot(211);plot(t,amplitude);
xlabel('Time'); ylabel('Amplitude');
k=fft([t,amplitude]);
subplot(212);plot(k);
xlabel('Frequency'); ylabel('Power');
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