Forensic voice Comparison with Japanese Vowels Accoustics - a likelihood ration-based approach using segmental cepstra

Philip Rose

Forensic voice Comparison with Japanese Vowels Accoustics - a likelihood ration-based approach using segmental cepstra

Philip Rose

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The suitability of vowel cepstral spectra for forensic voice comparison is explored within a likelihood ratio-based framework. Noncontemporaneous landline telephone recordings of 297 male Japanese speakers are compared using only two replicates each of their five vowels. 14 cepstrally-mean-subtracted LPC CCs from dc to 5 kHz are used as features. Multivariate likelihood ratios estimated for the 297 target- and 43956 nontarget trials give good results: an equal error rate of 0.28% and log likelihood ratio cost of 0.013. It is concluded that the approach has some merit.

Original language	English
Title of host publication	Proceedings of the ICPhS XVII 2011
Place of Publication	Hong Kong
Publisher	International Phonetic Association
Pages	1718-1721
Edition	Peer Reviewed
Publication status	Published - 2011
Event	International Congress of Phonetic Sciences (ICPhS 2011) - Hong Kong China Duration: 1 Jan 2011 → … http://www.icphs2011.hk/index.htm

Conference

Conference	International Congress of Phonetic Sciences (ICPhS 2011)
Period	1/01/11 → …
Other	August 17-21 2011
Internet address	http://www.icphs2011.hk/index.htm

Cite this

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title = "Forensic voice Comparison with Japanese Vowels Accoustics - a likelihood ration-based approach using segmental cepstra",

abstract = "The suitability of vowel cepstral spectra for forensic voice comparison is explored within a likelihood ratio-based framework. Noncontemporaneous landline telephone recordings of 297 male Japanese speakers are compared using only two replicates each of their five vowels. 14 cepstrally-mean-subtracted LPC CCs from dc to 5 kHz are used as features. Multivariate likelihood ratios estimated for the 297 target- and 43956 nontarget trials give good results: an equal error rate of 0.28% and log likelihood ratio cost of 0.013. It is concluded that the approach has some merit.",

author = "Philip Rose",

year = "2011",

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booktitle = "Proceedings of the ICPhS XVII 2011",

publisher = "International Phonetic Association",

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N2 - The suitability of vowel cepstral spectra for forensic voice comparison is explored within a likelihood ratio-based framework. Noncontemporaneous landline telephone recordings of 297 male Japanese speakers are compared using only two replicates each of their five vowels. 14 cepstrally-mean-subtracted LPC CCs from dc to 5 kHz are used as features. Multivariate likelihood ratios estimated for the 297 target- and 43956 nontarget trials give good results: an equal error rate of 0.28% and log likelihood ratio cost of 0.013. It is concluded that the approach has some merit.

AB - The suitability of vowel cepstral spectra for forensic voice comparison is explored within a likelihood ratio-based framework. Noncontemporaneous landline telephone recordings of 297 male Japanese speakers are compared using only two replicates each of their five vowels. 14 cepstrally-mean-subtracted LPC CCs from dc to 5 kHz are used as features. Multivariate likelihood ratios estimated for the 297 target- and 43956 nontarget trials give good results: an equal error rate of 0.28% and log likelihood ratio cost of 0.013. It is concluded that the approach has some merit.

M3 - Conference contribution

SP - 1718

EP - 1721

BT - Proceedings of the ICPhS XVII 2011

PB - International Phonetic Association

CY - Hong Kong

T2 - International Congress of Phonetic Sciences (ICPhS 2011)

Y2 - 1 January 2011

ER -

Forensic voice Comparison with Japanese Vowels Accoustics - a likelihood ration-based approach using segmental cepstra

Abstract

Conference

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