fftn
N dimensional fast Fourier transform (FFT).
Syntax
f = fftn(x)
f = fftn(x, dims)
Inputs
- x
- The signal to be transformed into the frequency domain.
- dims
- The dimension lengths of the FFT.
Outputs
- f
- The frequency domain representation of x.
Comments
The dimensions of the FFT, dims, default to the dimensions of the matrix being transformed. If dims are not the defaults, the signal matrix is either truncated or extended with zeros to the specified lengths.
fftn uses the FFTW library.