Audio Forensic Method: Voice Resemblance Analysis of Mobile Phone’s Voice Recorder

Abstract

Audio forensics is one of the sciences that juxtaposes between science and scientific methods in the 
process of sound recording Audio Forensic Method: Analyze Voice Resemblance Towards Mobile Phone's  Voice Recorder, by using Forensic audio method In Audio forensics: Theory and Analysis, are Pitch Statistical  Analysis, Formant and Bandwidth Statistical Analysis, Graphical Distribution Analysis and Spectrogram Analysis. However, in this study, researchers only focus on identifying pitch and formants in the data to be  analyzed. This study provides an example scenario of applying digital forensic techniques for voice pain  recognition. Greetings compare the sound in the evidence and the sound suspect on mobile phone media with a  voice case study woman. In this study, PRAAT application was used to help with the audio comparison process  from Known Samples and Unknown Samples. The results showed that Obvious results could be seen in words  spoken with high intonation. So, it is hoped that the output of this research can become a reference or enrichment material for law enforcement agencies, law, and academics who wish to continue their research  related to digital forensics. The words are pronounced with high intonation, while the original voice tends to be  low, indicating different formant values. So that it can be easily distinguished from the comparison voice,  which is on average high, very high, low, or shallow intonation. In contrast, in words with low and medium  intonation, the results of pitch analysis do not show significant differences. Digital voice forensic techniques  cannot validate evidence because no standard validation is determined. Digital forensic techniques can only  provide sound similarity analysis of good evidence by the suspect's voice.