Identification of speakers' voices in open trials of corruption cases: acoustic phonetic analysis

This study is about the identification of speakers' voices on a recording of forensic corruption open trials case for defendants held at the Medan District Court. The purpose of the study is to find out the functional features of duration, intensity, pitch, and frequency of the speakers' voices. The use of qualitative research methods was applied and Praat software was used for collecting and processing the data of speech sounds. The results of the study showed that the level of differentiation in voices delivered by judges, prosecutor, and witnesses, and the functional features of duration, intensity, pitch, and frequency of the speakers' voices in oral language used in trial corruption cases vary to one the other.