Why do we use the term cepstral in MFCCs, and how does it related to the cepstral domain?

1. What is cepstral domain?
2. What are cepstral used for?
3. What is the use of Mel Frequency Cepstral Coefficients MFCC?
4. Why is cepstrum analysis used?

What is cepstral domain?

The Cepstral domain results from taking the Inverse Fourier Transform of the LOGARITHM of your Fourier spectrum (instead of your 'plain' Fourier spectrum). Hence it is on the 'real' side of the representations.

What are cepstral used for?

We examine the periodicity that occurs with certain frequency spacings in the spectrum with Cepstral Analysis. The Cepstral Analysis is a tool for detecting periodicity in the frequency spectrum and it is mainly used in pitch detection, radar and sonar applications, speech analysis, and diagnostics.

What is the use of Mel Frequency Cepstral Coefficients MFCC?

The frequency domain signal is transformed into time-domain signal and the features are also termed as the mel-scale cepstral coefficients or mel-frequency cepstral coefficients which is used for speech recognition[3]. This technique is also widely used for voice recognition.

Why is cepstrum analysis used?

Cepstrum Analysis is a tool for the detection of periodicity in a frequency spectrum, and seems so far to have been used mainly in speech analysis for voice pitch determination and related questions.