MFCCs

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What is the procedure?

The high level representation of generating MFCCs is described below:

1. Signal must be reformed into stack of frames.
2. For each frame the power spectrum must be computed.
3. The desired filterbank must be designed for the relevant spectrum.
4. The energy coefficients should be calculated by filtering the spectrum of frames using the designed filterbank(The energy coefficients are calculated so far).
5. The log of the energy features should be computer(log-energy features).
6. The Discrete Fourier Transform must be performed to eliminate the correlation.
7. Usually first 13 coefficients are used and the rest will be discarded(Just a common sense and no pushing!).

By generating features we try to estimate a reliable estimation of the characteristics which are important.