Identification of source mobile hand sets using audio latency feature

Ashu Goyal; S K Shukla; R K Sarin

doi:10.1016/j.forsciint.2019.02.031

Identification of source mobile hand sets using audio latency feature

Forensic Sci Int. 2019 May:298:332-335. doi: 10.1016/j.forsciint.2019.02.031. Epub 2019 Feb 25.

Authors

Ashu Goyal¹, S K Shukla², R K Sarin³

Affiliations

¹ Amity Institute of Forensic Sciences, Amity University, Noida, UP, India. Electronic address: ashugoyal014@gmail.com.
² Amity Institute of Forensic Sciences, Amity University, Noida, UP, India.
³ APFSL, Tech Towers, Mangalgiri, Guntur Distt., Andhra Pradesh, India.

PMID: 30927719
DOI: 10.1016/j.forsciint.2019.02.031

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.

Keywords: Digital audio editing software; Digital audio recording; Source correspondence.