Supplementary orthogonal cepstral features

A new set of LP-derived features is introduced. The concept of these features is motivated by the power sum formulation of the LP cepstrum. Due to the fact that the LP model implies that the resulting poles are either real or occur in complex conjugate pairs, the power sum of the poles is equivalent...

Full description

Saved in:
Bibliographic Details
Published in1995 International Conference on Acoustics, Speech, and Signal Processing Vol. 1; pp. 413 - 416 vol.1
Main Author Assaleh, K.T.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1995
Subjects
Bandwidth
Cepstral analysis
Cepstrum
Equations
Feature extraction
Frequency
Polynomials
Predictive models
Spectral analysis
Transfer functions
Online AccessGet full text

Cover

More Information
Summary:A new set of LP-derived features is introduced. The concept of these features is motivated by the power sum formulation of the LP cepstrum. Due to the fact that the LP model implies that the resulting poles are either real or occur in complex conjugate pairs, the power sum of the poles is equivalent to the power sum of their real components. Therefore, the LP cepstrum is associated to the power sum of the real component of the LP poles. This fact is utilized in deriving a new set of features that is associated to the imaginary components of the LP poles. The author refers to this new set of features as the sepstral coefficients. It is found that the sepstral coefficients and cepstral coefficients are relatively uncorrelated. Hence, they can be used jointly to improve the performance of pattern classification applications where cepstral features are usually used. The author presents some preliminary results on speaker identification experiments.
ISBN:0780324315
9780780324312
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.1995.479609