Cepstral analysis of voice

Cepstral analysis is a measure of acoustic analysis to quantify the fundamental frequency and harmonic organization in voice. In cepstrum, the "frequency" of each wave component of the spectrum is called as "quefrency." Quefrency refers to frequency of the occurrence of the frequency in the power spectrum.

1. What is Cepstral analysis of speech?
2. How Cepstral analysis is useful for speech analysis?
3. What are Cepstral measures?
4. What is cepstrum in speech processing?

What is Cepstral analysis of speech?

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.

How Cepstral analysis is useful for speech analysis?

The cepstrum is a common transform used to gain information from a person's speech signal. It can be used to separate the excitation signal (which contains the words and the pitch) and the transfer function (which contains the voice quality).

What are Cepstral measures?

Cepstral peak prominence (CPP) is an acoustic measure of voice quality that has been qualified as the most promising and perhaps robust acoustic measure of dysphonia severity [1].

What is cepstrum in speech processing?

The cepstrum is a representation used in homomorphic signal processing, to convert signals combined by convolution (such as a source and filter) into sums of their cepstra, for linear separation. In particular, the power cepstrum is often used as a feature vector for representing the human voice and musical signals.