Cepstrum

1 definition found

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  cepstrum
       
           (Coined in a 1963 paper by Bogert, Healey, and
          Tukey) The {Fourier transform} of the log-magnitude spectrum:
       
          	fFt(ln( | fFt(window . signal) | ))


       
          This function is used in {speech recognition} and possibly
          elsewhere.  Note that the outer transform is NOT an inverse
          Fourier transform (as reported in many respectable DSP texts).
       
          [What's it for?]
       
          (1997-01-07)