Glossary Definition for FFT

Glossary Term: FFT 

Definition

A Fourier transform (FT) converts a signal from the time domain (signal strength as a function of time) to the frequency domain (signal strength as a function of frequency). It shows the signal's spectral content, divided into discrete bins (frequency bands).

The Fast Fourier Transform is a common algorithm for Fourier transforms. It is more efficient (faster) than the DFT, Discrete Fourier Transform.

Synonyms
  • Fast Fourier Transform
  • Fourier Transform
  • DFT
  • Discrete Fourier Transform
See Also
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