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- Title
Reliability of human-supervised formant-trajectory measurement for forensic voice comparison.
- Authors
Zhang, Cuiling; Morrison, Geoffrey Stewart; Ochoa, Felipe; Enzinger, Ewald
- Abstract
Acoustic-phonetic approaches to forensic voice comparison often include human-supervised measurement of vowel formants, but the reliability of such measurements is a matter of concern. This study assesses the within- and between-supervisor variability of three sets of formant-trajectory measurements made by each of four human supervisors. It also assesses the validity and reliability of forensic-voice-comparison systems based on these measurements. Each supervisor's formant-trajectory system was fused with a baseline mel-frequency cepstral-coefficient system, and performance was assessed relative to the baseline system. Substantial improvements in validity were found for all supervisors' systems, but some supervisors' systems were more reliable than others.
- Publication
The Journal of the Acoustical Society of America, 2013, Vol 133, Issue 1, pEL54
- ISSN
1520-8524
- Publication type
Journal Article
- DOI
10.1121/1.4773223