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Transforms

  • dctDiscrete cosine transform.
  • dstDiscrete sine transform.
  • fftDirect or inverse Fast Fourier Transform of a vector, matrix, or hypermatrix
  • fft2two-dimension fast Fourier transform
  • fftshiftrearranges the fft output, moving the zero frequency to the center of the spectrum
  • hilbFIR approximation to a Hilbert transform filter
  • ifftshiftinverse of fftshift
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