Version 1
: Received: 7 April 2021 / Approved: 8 April 2021 / Online: 8 April 2021 (17:56:51 CEST)
How to cite:
Machado, T.J.; Filho, J.V.; de Oliveira, M.A. Forensic Speaker Verification: Case Report at Brazilian Justice. Preprints2021, 2021040248. https://doi.org/10.20944/preprints202104.0248.v1
Machado, T.J.; Filho, J.V.; de Oliveira, M.A. Forensic Speaker Verification: Case Report at Brazilian Justice. Preprints 2021, 2021040248. https://doi.org/10.20944/preprints202104.0248.v1
Machado, T.J.; Filho, J.V.; de Oliveira, M.A. Forensic Speaker Verification: Case Report at Brazilian Justice. Preprints2021, 2021040248. https://doi.org/10.20944/preprints202104.0248.v1
APA Style
Machado, T.J., Filho, J.V., & de Oliveira, M.A. (2021). Forensic Speaker Verification: Case Report at Brazilian Justice. Preprints. https://doi.org/10.20944/preprints202104.0248.v1
Chicago/Turabian Style
Machado, T.J., Jozue Vieira Filho and Mario A. de Oliveira. 2021 "Forensic Speaker Verification: Case Report at Brazilian Justice" Preprints. https://doi.org/10.20944/preprints202104.0248.v1
Abstract
This case report investigates 5 real cases which followed legal channels and were judged by Mato Grosso Court in Brazil. Audio systems served as elements of key evidence on those lawsuits. The goal here is to analyze the cases by using a methodology based on the forensic speaker verification by using the Ordinary Least Squares (OLS) algorithm and to compare results with analyses obtained on real cases. The comparative analysis is assessed for time elapsed for obtaining results, as well as results quality. In Brazil, the lawsuit duration is very important, since the Penal Code foresees prescription after a given time, and it may lead to impunity. Results show that the analysis, by using OLS, generates immediate, effective results when compared to those obtained with traditional methodologies on the studied Brazilian lawsuits.
Keywords
forensic speaker comparison; voice processing; ordinary least squares; OLS
Subject
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
