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![Fast Fourier Transform -- from Wolfram MathWorld](https://www.iarticlesnet.com/pub/img/site/s_46.jpeg)
Fast Fourier Transform -- from Wolfram MathWorld
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日期:2024-07-11
The fast Fourier transform (FFT) is a discrete Fourier transform algorithm which reduces the number of computations needed for N points from 2N^2 to 2NlgN, where lg is the base-2 logarithm. If the function to be transformed is not harmonically related to ...看更多