Automatic forensic voice comparison (Automatischer forensischer Stimmenvergleich)
نویسنده
چکیده
Automatic speaker recognition systems have been developed and constantly improved during recent decades. However, even though these systems have been applied to the task of forensic voice comparison since the early 2000s, their behaviour under realistic forensic conditions has not often been thoroughly tested since then. Additionally, the application of these systems is not standardised and is far from being widely accepted in the forensic community. In order to provide a realistic estimate of the performance of automatic forensic voice comparison systems, two approaches to automatic forensic voice comparison developed by the author are tested under forensic conditions in this
منابع مشابه
Forensic Voice Comparison Using Chinese /iau/
An acoustic-phonetic forensic-voice-comparison system extracted information from the formant trajectories of tokens of Standard Chinese /iau/. When this information was added to a generic automatic forensic-voice-comparison system, which did not itself exploit acoustic-phonetic information, there was a substantial improvement in system validity but a decline in system reliability.
متن کاملEstimating the Precision of the Likelihood-Ratio Output of a Forensic-Voice-Comparison System
The issues of validity and reliability are important in forensic science. Within the likelihood-ratio framework for the evaluation of forensic evidence, the log-likelihood-ratio cost (Cllr) has been applied as an appropriate metric for evaluating the accuracy of the output of a forensic-voice-comparison system, but there has been little research on developing a quantitative metric of precision....
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This article provides a primer on forensic voice comparison (aka forensic speaker recognition), a branch of forensic science in which the forensic practitioner analyzes a voice recording in order to provide an expert opinion that will help the trier-of-fact determine the identity of the speaker. The article begins with an explanation of ways in which human speech varies within and between speak...
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In forensic voice comparison, there is increasing focus on the integration of automatic and phonetic methods to improve the validity and reliability of voice evidence to the courts. In line with this, we present a comparison of long-term measures of the speech signal to assess the extent to which they capture complementary speaker-specific information. Likelihood ratiobased testing was conducte...
متن کاملMapping Across Feature Spaces in Forensic Voice Comparison: The Contribution of Auditory-Based Voice Quality to (Semi-)Automatic System Testing
In forensic voice comparison, there is increasing focus on the integration of automatic and phonetic methods to improve the validity and reliability of voice evidence to the courts. In line with this, we present a comparison of long-term measures of the speech signal to assess the extent to which they capture complementary speaker-specific information. Likelihood ratiobased testing was conducte...
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