cepstra

1 definition found

cepstra - Free On-line Dictionary of Computing (26 May 2007) :

  cepstrum
  cepstra
  
     <mathematics> (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)