CEPSTRAL COEFFICIENTS
The cepstrum is a homomorphic space which allows deconvolution of the signal from the vocal tract shape.
where
are the filter bank amplitudes.
Liftering smoothes non-information bearing variability.
Most state-of-the-art recognition systems use 12 MFCCs, or mel-frequency cepstral coefficients.
are
the filter bank amplitudes.
are
the filter bank amplitudes.