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psd of any signal

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Achintya Roy
Achintya Roy el 31 de Mzo. de 2014
Cerrada: MATLAB Answer Bot el 20 de Ag. de 2021
How to find psd of any signal and I want the data as frequency(rad/sec) vs power

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Carlos
Carlos el 31 de Mzo. de 2014
Try something like this
N = length(x);
xfft = fft(x);
psdx = (1/(2*pi*N)).*abs(xfft).^2;
freq = 0:(2*pi)/N:2*pi-(2*pi)/N;
plot(freq./pi,10*log10(psdx)); grid on;
Achintya Roy
Achintya Roy el 31 de Mzo. de 2014
Is there any theory behind this

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