Applying base value of fundamental frequency via the multivariate Kernel-Density in Forensic Speaker Comparison
Da Silva RR, Da Costa JPC, Miranda RK, Del Galdo G (2016)
Publication Type: Conference contribution
Publication year: 2016
Publisher: Institute of Electrical and Electronics Engineers Inc.
Conference Proceedings Title: 2016, 10th International Conference on Signal Processing and Communication Systems, ICSPCS 2016 - Proceedings
Event location: Surfers Paradise, QLD, AUS
ISBN: 9781509009411
DOI: 10.1109/ICSPCS.2016.7843307
Abstract
Forensic Speaker Comparison (FSC) is used in a legal process to compare speech patterns from a known speaker, the suspect and from an unknown offender, producing evidence for the conviction or the elimination of the suspect. The FSC methodology used most, applied worldwide by forensic experts, is based on linguistic-acoustic analysis. Fundamental Frequency (F0) is the acoustic parameter used most due to its robustness in poor quality audio recordings. The statistical base value parameter of F0 has shown, in recent research, to be more stable than other F0 measures and less affected by the speech style, the content, the recording channel and the speaker effort. Besides these good characteristics, only a small number of FSC experts worldwide use the base value parameter. In this research the discriminating power of the base value of F0 was investigated, as well as the improvement achieved by combining it to other statistical long-term measures of F0 using the Multivariate Kernel Density (MVKD). An Equal Error Rate (EER) of 13 % was obtained combining the statistical measure base value and the median of the F0, outperforming recent researches, indicating that the base value is more suitable in F0 acoustic analysis.
Involved external institutions
Brazil (BR)
Germany (DE)How to cite
APA:
Da Silva, R.R., Da Costa, J.P.C., Miranda, R.K., & Del Galdo, G. (2016). Applying base value of fundamental frequency via the multivariate Kernel-Density in Forensic Speaker Comparison. In Tadeusz A Wysocki, Beata J Wysocki (Eds.), 2016, 10th International Conference on Signal Processing and Communication Systems, ICSPCS 2016 - Proceedings. Surfers Paradise, QLD, AUS: Institute of Electrical and Electronics Engineers Inc..
MLA:
Da Silva, Ronaldo R., et al. "Applying base value of fundamental frequency via the multivariate Kernel-Density in Forensic Speaker Comparison." Proceedings of the 10th International Conference on Signal Processing and Communication Systems, ICSPCS 2016, Surfers Paradise, QLD, AUS Ed. Tadeusz A Wysocki, Beata J Wysocki, Institute of Electrical and Electronics Engineers Inc., 2016.
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