So , f i We 've always viewed it , anyway , as the major difference between the two , is actually in the smoothing , that the  that the , um ,  PLP , and  and the reason PLP has been advantageous in , uh , slightly noisy situations is because ,  PLP does the smoothing at the end by an auto - regressive model ,
Mm - hmm. Mm - hmm.
and mel cepstrum does it by just computing the lower cepstral coefficients.
Mm - hmm.