A Comparison of Two Acoustic Methods for Forensic Speaker Discrimination

Frantz Clermont, Philip Rose

    Research output: Contribution to journalArticle

    Abstract

    A pilot forensic-phonetic experiment is described which compares the performance of formant- and cepstrally-based analyses on forensically realistic speech: intonationally varying tokens of the word hello said by six demonstrably similar-sounding speakers in recording sessions separated by at least a year. The two approaches are compared with respect to F-ratios and overall discrimination performance utilising a novel band-selective cepstral analysis. It is shown that at the second diphthongal target in hello the cepstrum-based analysis outperforms the formant analysis by about 5%, compared to its 10% superiority for same-session data.
    Original languageEnglish
    Pages (from-to)31-35
    JournalAcoustics Australia
    Volume29
    Issue number1
    Publication statusPublished - 2001

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