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Function Summary

MATLAB provides a collection of functions for computing and working with Fourier transforms.

FFT Function Summary  
Function
Description
fft
Discrete Fourier transform.
fft2
Two-dimensional discrete Fourier transform.
fftn
N-dimensional discrete Fourier transform.
ifft
Inverse discrete Fourier transform.
ifft2
Two-dimensional inverse discrete Fourier transform.
ifftn
N-dimensional inverse discrete Fourier transform.
abs
Magnitude.
angle
Phase angle.
unwrap
Unwrap phase angle in radians.
fftshift
Move zeroth lag to center of spectrum.
cplxpair
Sort numbers into complex conjugate pairs.
nextpow2
Next higher power of two.


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