How to interpret the sign of a cepstral coefficient?

1. What do MFCC coefficients represent?
2. How do you calculate the Mel frequency of Cepstral Coefficients?
3. How do you explain MFCC?
4. Why does Mel frequency have Cepstral Coefficients?

What do MFCC coefficients represent?

In sound processing, the mel-frequency cepstrum (MFC) is a representation of the short-term power spectrum of a sound, based on a linear cosine transform of a log power spectrum on a nonlinear mel scale of frequency. Mel-frequency cepstral coefficients (MFCCs) are coefficients that collectively make up an MFC.

How do you calculate the Mel frequency of Cepstral Coefficients?

Mel Frequency Cepstral Coefficients

The basic procedure to develop MFCCs is the following: Convert from Hertz to Mel Scale. Take logarithm of Mel representation of audio. Take logarithmic magnitude and use Discrete Cosine Transformation.

How do you explain MFCC?

The mel frequency cepstral coefficients (MFCCs) of a signal are a small set of features (usually about 10-20) which concisely describe the overall shape of a spectral envelope. In MIR, it is often used to describe timbre.

Why does Mel frequency have Cepstral Coefficients?

MFCC (Mel Frequency Cepstrum Coefficient) was used to extract the voice feature from expert and the tester. The extraction results were compared with the DTW (Dynamic Time Warping) method that was used to compare two sound features from MFCC process.