Abstract
An experiment is described relating to estimation of strength of evidence in likelihood ratio-based forensic voice comparison. It is asked whether a better performance is obtained from point estimation of formant pattern targets in monophthongal vowel acoustics rather than formant trajectories. The hypothesis is tested on non-contemporaneous recordings of a custom-built challenging database of 26 young Australian female voices performing a map task. Evaluation with the log likelihood ratio cost validity metric Cllr shows that both trajectory and target perform well, but that contrary to phonological predictions, evidence based on monophthongal F-pattern trajectory is superior to target point measurements.
Original language | English |
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Pages | 4819-4823 |
DOIs | |
Publication status | Published - 2015 |
Event | International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2015 - South Brisbane, QLD Duration: 1 Jan 2015 → … |
Conference
Conference | International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2015 |
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Period | 1/01/15 → … |