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Meaning of CEPSTRUM

 
Computing Dictionary
 
 Definition: 

(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).

 

 

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