Definition of "cepstrum" [cepstrum]

• The Fourier transform of the logarithm of a spectrum; used especially in voice analysis (noun)

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• "The final method, metric based segmentation uses Both methods utilize the concept of the "cepstrum" based estimated "differences" in adjacent audio frames in order on successive fourier transforms and a log transform to discover speaker change points."
• "His recent work on using FFTs to factor very high-order polynomials has been recognized as an alternative for phase unwrapping and determining the complex cepstrum of long data sequences, which can used for analyzing radar signals or voice detection, among other applications."