How can I plot FFT (Fast Fourier Transform) in a for loop?
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I have this code, it works until m=numfiles, the last part is a code I used for FFT only for one file but I want to adapt in a for-end loop. Data is in cells. I tried to adapt but it doesn't work.
files= dir('*.avi');
numfiles=length(files);
mydata= cell(numfiles,1);
info=cell(numfiles,1);
isFileSupported = true(numfiles, 1) ;
for j=1:numfiles
try
info{j}=mmfileinfo(files(j).name);
audio = info{j}.Audio
video = info{j}.Video
catch ME
isFileSupported(j) = false;
continue;
end
end
supportedFiles = files(isFileSupported);
for k=1:numel(supportedFiles)
mydata{k}=importdata(supportedFiles(k).name);
end
if true
% code
end
m=numfiles
nfft=2^nextpow2(m);
Numnfft=length(nfft);
x_HannWind=x.*hanning(m);
Y=fft(x_HandWind,nfft)/m; %Fast Fourier Transform%
length(Y);
Y_mag = abs(Y); %Magnitude FFT%
plot(Y_mag);
xlabel('Frecuence [Hz]')
ylabel('Magnitude')
end
0 commentaires
Réponses (0)
Voir également
Catégories
En savoir plus sur Fourier Analysis and Filtering 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!