Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
Drexel University or The Math Forum.
|
|
|
|
Re: pwelch power correction factor
Posted:
Nov 19, 2010 11:09 AM
|
|
>
> My point is that in the applications where spectrum estimation
> methods like Welch's method are used, the main focus is to get
> an *impression* of the spectrum shape. The exact numbers are
> irrelevant.
>
> As I said, read up on the methods.
>
> Rune
Thank you Rune. I think your point about getting the "impression" of the spectrum is a valid one. However, you keep implying that I am not reading the documentation. But I am and it says:
"Pxx is the distribution of power per unit frequency. For real signals, pwelch returns the one-sided PSD by default; ... Note that a one-sided PSD contains the total power of the input signal."
So once again, I am questioning whether or not the PSD does in fact contain the total power of the input signal. Maybe I am missing something fundamental, but again, I think it is a fair question.
|
|
|
|
