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