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Line 2: * [[Spectroscopy]] in chemistry and physics, a method of analyzing the properties of matter from their electromagnetic interactions * [[Spectral ~~density~~ estimation]], in statistics and signal processing, an algorithm that estimates the strength of different frequency components (the power spectrum) of a time-___domain signal. This may also be called [[frequency ___domain]] analysis * [[Spectrum analyzer]], a hardware device for achieving this * [[Spectral theory]], in mathematics, a theory that extends eigenvalues and eigenvectors to linear operators on Hilbert space, and more generally to the elements of a [[Banach algebra]]

Spectral analysis: Difference between revisions