Journal
SCIENCE & JUSTICE
Volume 54, Issue 3, Pages 245-256Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.scijus.2013.07.004
Keywords
Validity; Reliability; Forensic voice comparison; Aural; Spectrographic; Acoustic-phonetic
Categories
Funding
- Australian Research Council
- Australian Federal Police
- New South Wales Police
- Queensland Police
- National Institute of Forensic Science
- Australasian Speech Science and Technology Association
- Guardia Civil through Linkage Project [LP100200142]
- Australian Research Council [LP100200142] Funding Source: Australian Research Council
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In this paper it is argued that one should not attempt to directly assess whether a forensic analysis technique is scientifically acceptable. Rather one should first specify what one considers to be appropriate principles governing acceptable practice, then consider any particular approach in light of those principles. This paper focuses on one principle: the validity and reliability of an approach should be empirically tested under conditions reflecting those of the case under investigation using test data drawn from the relevant population. Versions of this principle have been key elements in several reports on forensic science, including forensic voice comparison, published over the last four-and-a-half decades. The aural-spectrographic approach to forensic voice comparison (also known as voiceprint or voicegram examination) and the currently widely practiced auditory-acoustic-phonetic approach are considered in light of this principle (these two approaches do not appear to be mutually exclusive). Approaches based on data, quantitative measurements, and statistical models are also considered in light of this principle. (C) 2013 Forensic Science Society. Published by Elsevier Ireland Ltd. All rights reserved.
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