A spectral power density is defined by
![P_y(nu)=lim_(T->infty)2/T|int_(-T/2)^(T/2)[y(t)-y^_]e^(-2piinut)dt|^2,](/images/equations/SpectralPowerDensity/NumberedEquation1.svg) |
(1)
|
so
 |  | ![lim_(T->infty)1/Tint_(-T/2)^(T/2)[y(t)-y^_]^2dt](/images/equations/SpectralPowerDensity/Inline3.svg) |
(2)
|
 |  |  |
(3)
|
 |  |  |
(4)
|
Spectral Power Density
See also
Power SpectrumExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Spectral Power Density." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/SpectralPowerDensity.html