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fast Fourier transform


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(FFT)

An algorithm (e.g. the Cooley–Tukey method) which enables the Fourier transformation of digitized wave-forms to be accomplished more rapidly by computer than would be possible using direct evaluation of the Fourier integral. FFT usually involves iterative techniques. See also fourier analysis; and fourier transform.

Subjects: Earth Sciences and Geography — Probability and Statistics.


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