Forms of the Fourier Transform
There are four forms of the Fourier Transform, as follows:
Fourier Series -- Transforms an infinite periodic time signal into an infinite discrete frequency spectrum.
Fourier Integral Transform -- Transforms an infinite continuous time signal into an infinite continuous frequency spectrum
Discrete Fourier Transform (DFT) -- Transforms a discrete periodic time signal into a discrete periodic frequency spectrum
Fast Fourier Transform -- A computer algorithm for calculating the DFT
They will be discussed in more detail in the next section.
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