What is Forensic Voice Comparison?
What is the relevant population? Considerations for the computation of likelihood ratios in forensic voice comparison
... In forensic voice comparison, it is essential to consider not only the similarity between samples, but also the typicality of the evidence in the relevant ...region-specific voice features ...
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What is the relevant population? Considerations for the computation of likelihood ratios in forensic voice comparison
... In forensic voice comparison, it is essential to consider not only the similarity between samples, but also the typicality of the evidence in the relevant ...region-specific voice features ...
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Forensic voice comparison using long-term acoustic measures of voice quality
... ABSTRACT Voice quality (VQ) is reported by forensic analysts to be a useful variable in voice comparison ...a forensic voice comparison system based on long-term acoustic ...
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Syllabus for ELEC9782 Advanced Forensic Voice Comparison and the Evaluation of Evidence
... to forensic voice comparison. ELEC9782 “Advanced Forensic Voice Comparison and the Evaluation of Evidence” explores these topics in greater depth and breadth via extensive ...
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An investigation of supervector regression for forensic voice comparison on small data
... 4.1 Database of 60 female speakers of standard Chinese The first database used in the present study is available from http://databases.forensic-voice-comparison.net/. It consists of voice recordings of 60 ...
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THE EFFECT OF SPEAKER SAMPLING IN LIKELIHOOD RATIO BASED FORENSIC VOICE COMPARISON
... words: forensic voice comparison, Likelihood ratio, system stability, English filled pause, Cantonese sentence final ...Introduction Forensic voice comparison (FVC) involves the ...
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Questions, propositions and assessing different levels of evidence : Forensic voice comparison in practice
... of forensic voice comparison cases, group-level information observed in the offender sample will be evidential, and that such observations should not necessarily be restricted to broadly-defined ...
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The individual and the system : Assessing the stability of the output of a semi-automatic forensic voice comparison system
... within forensic voice comparison (or indeed any biometric) systems should be an essential part of ...the forensic scientist to understand whether their system is applicable to the voices under ...
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The effect of score sampling on system stability in likelihood ratio based forensic voice comparison
... INTRODUCTION Forensic voice comparison (FVC) is a sub-discipline of forensic speech science, which is the application of linguistics, phonetics and acoustics to legal cases ...
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Mapping 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 ...a ...
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Empirical test of the performance of an acoustic-phonetic approach to forensic voice comparison under conditions similar to those of a real case
... tested forensic voice comparison ...a forensic practitioner had focused on in performing an auditory-acoustic-phonetic-spectrographic analysis for the ...
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Text dependent Forensic Voice Comparison: Likelihood Ratio Estimation with the Hidden Markov Model (HMM) and Gaussian Mixture Model
... ly accepted in forensic voice comparison (FVC) as well (Morrison, 2009). There are two different approaches in FVC. They are the ‘acoustic-phonetic statistical ap- proach’ and the ‘automatic ...
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Likelihood Ratio based Forensic Voice Comparison on L2 speakers: A Case of Hong Kong native male production of English vowels
... This study is a pilot research that explores the effectiveness of a likelihood ratio (LR)-based forensic voice comparison (FVC) system built on non-native speech production. More spe- cifically, it ...
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A Likelihood-Ratio Based Forensic Voice Comparison in Standard Thai
... analysis, forensic experts will first listen to incriminating speech samples of unknown origin, taken for instance from recordings embedded in CCTV footage, and speech samples of suspects, ...on forensic ...
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Strength of forensic voice comparison evidence from the acoustics of filled pauses
... Forensic patterns The results of LR-based testing have shown that FPs offer excellent potential as variables in FVC. Optimal performance was achieved using the formant trajectories of all three formants from the ...
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Effects of formant settings and channel mismatch on semi-automatic systems in forensic voice comparison
... the type described by Morrison [15] does not necessarily answer this question. We would argue that it is more critical to understand the behaviour of individual speakers, or types of speakers, within the system, and thus ...
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The definition of the relevant population and the collection of data for likelihood ratio-based forensic voice comparison
... The findings of this thesis have a number of implications for LR-based FVC, and potentially other areas of forensic science by extension. The results of these studies will allow analysts to understand and ...
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A Comparative Study of Two Statistical Modelling Approaches for Estimating Multivariate Likelihood Ratios in Forensic Voice Comparison
... SS comparison log 10 LRs (40) that are equal or smaller than the value indi- cated on the x-axis, and the solid grey curve indi- cates the cumulative proportion of the DS com- parison log 10 LRs (1560) that are ...
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The Effect of the Within speaker Sample Size on the Performance of Likelihood Ratio Based Forensic Voice Comparison: Monte Carlo Simulations
... §4.5 for the detailed explanation of calibration). 4 Experiments 4.1 Features We used 16 Mel Frequency Cepstrum Coeffi- cients (MFCC) in the experiments as feature vec- tors. MFCC is a standard spectral feature which is ...
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FABIOLE, a Speech Database for Forensic Speaker Comparison
... in forensic voice ...in forensic voice comparison and interpreting some unsolved issue such as the relationship between speaker characteristics and system ...a voice ...
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