Estimation spectrale Méthodes non-paramétriques
Estimation spectrale Méthodes non-paramétriques
Estimation spectrale Méthodes non-paramétriques
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Code en MATLAB<br />
function Px = welch(x,L,over,win);<br />
if (over >= 1) | (over < 0)<br />
error(‘Overlap is invalid’)<br />
end<br />
N = length(x);<br />
n1 = 1;<br />
n0 = (1-over)*L;<br />
K = 1+floor((N-L)/n0);<br />
Px = 0;<br />
for i=1:K<br />
Px = Px + mperiodogram(x(n1:n1+L-1),win)/K;<br />
n1 = n1 + n0;<br />
end<br />
INRS-EMT J. Benesty 19