An empirical estimate of the precision of likelihood ratios from a forensic-voice-comparison system
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Morrison, Geoffrey; Zhang, Cuiling; Rose, Philip
Description
An acoustic-phonetic forensic-voice-comparison system was constructed using the time-averaged formant values of tokens of 61 male Chinese speakers' /i/, /e/, and /a/ monophthongs as input. Likelihood ratios were calculated using a multivariate kernel density formula. A separate set of likelihood ratios was calculated for each vowel phoneme, and these were then fused and calibrated using linear logistic regression. The system was tested via cross-validation. The validity and reliability of the...[Show more]
Collections | ANU Research Publications |
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Date published: | 2011 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/57680 |
Source: | Forensic Science International |
DOI: | 10.1016/j.forsciint.2010.11.001 |
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