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How to evaluate the noise in the transient noise analysis?

I want to calculate the noise of my circuit (a regulator). I use the small signal noise analysis at first. But it seems very different with the measurement results. So I try the transient noise analysis. How to evalue the noise from the simulation results (waves)? Do the frequencies (fmin,fmax) belog to additional noise or the internal noise of the circuit?

Thank you at advance!

crest

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crest over 14 years ago

I saved the simulation results and import it to the matlab. I can gain the histogram by hist() now. Which parameter is related to the noise? The std or anathing else? Should I delete the signal from the results?
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crest over 14 years ago

I saved the simulation results and import it to the matlab. I can gain the histogram by hist() now. Which parameter is related to the noise? The std or anathing else? Should I delete the signal from the results?
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