Aging effects on voice features used in forensic speaker comparison
Bibliographic Data
| ID | 19535776 |
|---|---|
| Authors | Richard Rhodes (0000-0003-0320-4060, corresponding author) |
| Year | 2017 |
| Volume | 24 |
| Issue | 2 |
| Pages | 177-199 |
| Publication date | 2017-12-20 |
| Open Access | No |
| Type | ARTICLE |
| Venue | International Journal of Speech Language and the Law (JOURNAL) |
| Journal identifiers | ISSN: 1748-8885 • E-ISSN: 1748-8893 |
| Publisher | University of Toronto Press Inc. (UTPress) (PUBLISHER) |
| DOI | 10.1558/ijsll.34096 |
| OpenAlex | W2779728617 |
| Language | EN |
| Citations received | 2 |
This article assesses the impact of long-term non-contemporaneity between recordings on the strength of forensic voice evidence and provides recommendations for casework. Analyses of longitudinal recordings from a British television documentary series illustrate the effects of aging on forensically useful acoustic parameters. Recordings from eight speakers span five seven-year intervals, between ages 21 and 49. The frequency of the first three formants of nine monophthongs and two diphthongs decrease over time. Strength of evidence estimates for non-contemporaneous comparisons are calculated from these data using a likelihood ratio approach. Longer delays predictably result in weaker and fewer correct LRs. The effect of aging on the performance of an ASR system (BATVOX) is tested; performance varies between speakers, but deteriorates considerably in longer delays for all speakers. Findings from this and similar studies should be considered when carrying out formant- or ASR-based comparisons across long delays, and in selecting age-appropriate reference data
Audiology · Diphthong · Formant · Speech recognition · Computer Science · Medicine · Music and Audio Processing · Psychology · Speech and Audio Processing · Speech Recognition and Synthesis
| Citations per year | 0.33 |
|---|---|
| Citation span | 2020 - 2023 (4) |
| Highly cited | No |