Automatic type Calibration of traditionally Derived Likelihood Ratios: Forensic Analysis of Australian English /o/ Formant Trajectories

Geoffrey Morrison, Yuko Kinoshita

Research output: A Conference proceeding or a Chapter in BookConference contribution

14 Citations (Scopus)
4 Downloads (Pure)

Abstract

A traditional-style phonetic-acoustic forensic-speaker-recognition analysis was conducted on Australian English /o/ recordings. Different parametric curves were fitted to the formant trajectories of the vowel tokens, and cross-validated likelihood ratios were calculated using a single-stage generative multivariate kernel density formula. The outputs of different systems were compared using Cllr , a metric developed for automatic speaker recognition, and the cross-validated likelihood ratios were calibrated using a procedure developed for automatic speaker recognition. Calibration ameliorated some likelihood-ratio results which had offered strong support for a contrary-to-fact hypothesis
Original languageEnglish
Title of host publicationProceedings of the 9th Annual Conference of International Speech Communication Association (Interspeech 2008)
EditorsM Wagner
Place of PublicationChina
PublisherInternational Speech Communication Association (ISCA)
Pages1501-1504
Number of pages4
Volume1
ISBN (Print)9780769531748
Publication statusPublished - 2008
EventInterspeech 2008 - Brisbane, Australia
Duration: 22 Sep 200826 Sep 2008

Publication series

NameProceedings of the Annual Conference of the International Speech Communication Association
PublisherInternational Speech Communication Association
Number9th
ISSN (Electronic)1990-9772

Conference

ConferenceInterspeech 2008
CountryAustralia
CityBrisbane
Period22/09/0826/09/08

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  • Cite this

    Morrison, G., & Kinoshita, Y. (2008). Automatic type Calibration of traditionally Derived Likelihood Ratios: Forensic Analysis of Australian English /o/ Formant Trajectories. In M. Wagner (Ed.), Proceedings of the 9th Annual Conference of International Speech Communication Association (Interspeech 2008) (Vol. 1, pp. 1501-1504). (Proceedings of the Annual Conference of the International Speech Communication Association ; No. 9th). International Speech Communication Association (ISCA).