Phonetic analysis for forensic speaker identification

Abstract

Based on the theories of phonetics, dialects, forensic science assessment, phonetic apparatus and application of "Voice Workstation VS4.0" software, this article presents an analysis of sound assessment (speaker identification) at the Criminal Science Sub-Institute of the Ministry of Public Security in Ho Chi Minh City. The surveyed voices  are those of the cases who  used  high technology to defraud many people in provinces and cities across the country. Research results show that: 1) Each person has his/her own unique timbre; 2) Pronunciation disorders are individually based; 3) The formants of high-pitched vowels  are individually distinctive.