Fast Fourier Transform Fast Fourier Transform: Article in MathWorld. (Transform Calculus) http://mathworld.wolfram.com/FastFourierTransform.html
An Introduction to Fourier Theory An Introduction to Fourier Theory: A mathematically inclined introduction with illustrations and explanations of related theorems, its properties and numerical methods for calculating transforms. (Transform Calculus) http://utcsl.phys.utk.edu/~forrest/papers/fourier/
Introduction to the Fourier Transform Introduction to the Fourier Transform: Notes on applications to Image Processing. (Transform Calculus) http://www.cs.unm.edu/~brayer/vision/fourier.html
Fast Fourier Transforms Fast Fourier Transforms: Survey and history of FFT algorithms from Wikipedia. (Transform Calculus) http://www.wikipedia.org/wiki/Fast_Fourier_transform
Mathematics of the Discrete Fourier Transform (DFT) Mathematics of the Discrete Fourier Transform (DFT): Notes by Julius O. Smith III, Stanford. (Transform Calculus) http://ccrma-www.stanford.edu/~jos/r320/
The FFT Demystified The FFT Demystified: A web text explaining the techniques of discrete and fast transforms. (Transform Calculus) http://www.eptools.com/tn/T0001/INDEX.HTM
Additional
Information: The mathematics of numerical methods for Fourier and related transforms.
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