fftfreq

Returns the frequency values of an fft

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This is inspired by python/numpy's fftfreq function. There is added functionality here in that if alias_dt is specified, the returned frequencies are the folded (aliased) frequencies one would see if the raw signal were to be subsampled at the slower rate (longer period).

Cite As

Peter Mao (2026). fftfreq (https://www.mathworks.com/matlabcentral/fileexchange/67026-fftfreq), MATLAB Central File Exchange. Retrieved .

Categories

Find more on Fourier Analysis and Filtering in Help Center and MATLAB Answers

General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
Version Published Release Notes Action
1.0.0.0

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