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Identification of source mobile hand sets using audio latency feature
Ashu Goyal1, S K Shukla1, R K Sarin2
1Amity Institute of Forensic Sciences, Amity University, Noida, UP, India.
Abstract:
An experiment has been carried out for determination of source of digital audio recording using audio latency feature of mobile phones. The legal requirement of the source correspondence with the audio recordings in question has driven the necessity of such study. The evaluation is based on 300 audio recordings recorded with ten mobile handsets of MOTOROLA make but different model in three different format "3gp", "wav" and "m4a" format (ten audio recording in each format) recorded in stereo signal at 16 kHz and in different recording sessions using EASY VOICE RECORDER application. Adobe audition 3.0 software is used for analysis. The analysis of audio latency has been carried out in a set of ten mobile handsets having multimedia capability. The result of this study shows that the audio latency of mobile handsets of same make but different model carry the specific feature of latency and such audio latency is robust for establishing the source of audio recordings.
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