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・ disa
・ disaster planning
・ disaster recovery
・ disc
・ disc drive
・ disclaimer
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・ discordianism
・ discrete cosine transform
・ discrete fourier transform
・ discrete preorder
・ discriminated union
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discrete Fourier transform : FOLDOC
discrete Fourier transform
(DFT) A Fourier transform, specialized to the case where the {abscissas} are integers.
The DFT is central to many kinds of {signal processing}, including the analysis and compression of video and sound information.
A common implementation of the DFT is the Fast Fourier Transform (FFT).
See also discrete cosine transform.
(1997-03-10)



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