Using the DFT: Difference between revisions
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sampling <math>sin(2*pi*t)</math> and taking the DFT we get this |
sampling <math>sin(2*pi*t)</math> and taking the DFT we get this graph: |
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Script for matlab: |
Script for matlab: |
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Revision as of 11:42, 12 November 2007
sampling and taking the DFT we get this graph:
Script for matlab:
clear all;
t=0:.01:1;
T=0.20;
ts=0:T:1;
f1=2;
f2=1/0.125;
x = sin(2*pi*3*t); %this is the function
plot(t,x); % plot the original signal
X = fft(x); % take the DFT
pause (2);
plot (t,X); %plot the DFT of the signal