University of Hertfordshire

By the same authors

The use of sub-band cepstrum in speaker verification

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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Original languageEnglish
Title of host publication00) Vol.2
ISBN (Print)0-7803-6293-4
Publication statusPublished - 2000


This paper focuses on the spectral representation of the sub-band cepstrum in relation to that of the full-band cepstrum. Through theoretical analysis it is shown that the net spectral information content of the cepstral coefficients with the same index in different sub-bands is only comparable to that of a full-band cepstral parameter whose quefrency is given by the product of that specific index with the number of sub-bands. A new method is proposed to tackle this deficiency of the sub-band cepstrum when it is used in the context of text-dependent speaker verification. The experimental investigations have clearly demonstrated the effectiveness of this method in speaker verification.


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