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 contributionpeer-review

    20 Citations (Scopus)
    27 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 Sept 200826 Sept 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
    Country/TerritoryAustralia
    CityBrisbane
    Period22/09/0826/09/08

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