Analysis Voice On Mobile Phone’s Voice Recorder By Using Audio Forensic Method
Abstract
Audio forensics is one of the sciences that juxtaposes between science and scientific methods in Analyze Voice on Mobile Phone's Voice Recorder By Using Audio Forensic Method, 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, a Praat application was used to help with the audio comparison process from Known Samples and Unknown Samples. The results showed that based on the F0 analysis of the voice data with PRAAT, the difference between the original speaker's voice and the voice of the comparison speaker could be seen. There is no similarity F0 in the low, medium, and high pitch voices of native speakers with comparison speakers. From these results, it can be seen that there are no three F0's in the low, medium, and high tones of the word "proyek" from the same comparison speaker as the original speaker. Based on the F1-F4 analysis of the voice data with PRAAT, the difference between the voice of the original speaker and the voice of the comparison speaker can be seen. No similarity was found between F1-F4 in the low, medium, and high pitched voices of native speakers and comparison speakers. From these results, it can be seen that there are no F1-F4 vocal formants in the word "terlibat" from the same comparison speaker as the native speaker so that the difference becomes apparent
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