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Welcome to the ZyXEL Networking Glossary - your definitive source for descriptions of networking terms and ZyXEL's product features.

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    FFT

    A Fast Fourier Transform (FFT) is a mathematical algorithm used to perform the Discrete Fourier Transformation (DFT) that describes a complex waveform (such as an audio or radio signal) in terms of the trigonometric functions (sine and cosine) that comprise its elementary waves. FFT is widely used in digital signal processing applications.