Using ifft correctly in MATLAB
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi,
I am trying to match the functions in Fourier transform table, i.e. I am plotting one function, then I use the standard transform of that function, take the ifft and try to match with original time domain function. But, the results don't match. I also tried using ifftshift command, but that also does not help. Can you please help me out with this? For reference I am attaching my code here.
clc; clear all; close all; %% sigma=5; t=0:1:100; f1=exp((-t.^2)/(2*(sigma^2)));
%%
N=2^8; f2=zeros(1,N-1);w=zeros(1,N-1);
for n=1:1:N-1; w(n)=2*pi*n/N; f2(n)=sigma*(sqrt(2*pi))*exp(-((sigma^2)*(w(n)^2))/2);
end f3=sigma*(sqrt(2*pi)); f4=[f3 f2]; f5=ifft(ifftshift(f4)); %% figure(1) subplot(2,1,1), plot(t,f1) subplot(2,1,2), plot(1/(N):100/(N):100,f4)
0 commentaires
Réponses (0)
Voir également
Catégories
En savoir plus sur Graphics Object Programming dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!