The present code is a Matlab function that provides a computation of the:
1) one-sided real cepstrum;
2) quefrency vector.
An example is given in order to clarify the usage of the function. For convenience, the input and output arguments are given in the beginning of the function.
The code is based on the theory described in:
 D. Childers, D. Skinner, R. Kemerait. “The Cepstrum: A Guide to Processing”. Proceedings of the IEEE, Vol. 65, No. 10, October 1977, pp. 1428-1443.
 U. Zolzer. DAFX: Digital Audio Effects. Chichester, John Wiley & Sons, 2011.
 J. Benesty, M. Sondhi, Y. Huang. Springer Handbook of Speech Processing. Berlin, Springer, 2008.
Hristo Zhivomirov (2020). Cepstral Analysis with Matlab (https://www.mathworks.com/matlabcentral/fileexchange/44632-cepstral-analysis-with-matlab), MATLAB Central File Exchange. Retrieved .
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