Digital Forensics System Using PLC for Inter-Floor Noise Measurement: Detailing PLC-Based Android Solution Replacing CCTV-based Solution

Abstract

The neighborly dispute arising from the inter-floor noises has been increasing for the past two decades in Korean apartments or multi-unit houses sometimes leading to a serious consequence. Although there have been some attempts to resolve such a dispute, one of the underlying problems has to be solved first. That is, in addition to identifying the cause for the noise, it is necessary to prove who has actually suffered from the noise itself. Now that many of such a dispute is being settled at the civil court, producing objective evidence has become important. Therefore, digital forensics which is being widely used at the crime scenes by the police or other anti-crime organizations to collect evidences scientifically has begun to receive attention for the purpose of measuring noise levels. This technique has evolved in recent years following the rapid development in IT and ICT technologies but its problem is that such a technique has to be performed by the experts due to its complicated system so that those who need to measure the noise level usually outsource this work spending quite a sum. Thus, this study introduces a digital forensic system design which allows the user to effectively measure the inter-floor or neighborly noises directly and conveniently without much cost. The relevant system elements have been implemented with Java Android.

Robust Speech Hashing for Digital Audio Forensics

“…Digital forensics is a discipline whose main objective is the application of computer tools in legal proceeding or an official investigation of some kind. It is used by experts to analyze, preserve and produce storage data for both volatile and non-volatile media, contributing to the veracity of digital evidence that is legally provided [6][7][8]. One of the fields of this discipline is audio forensics, where the aim is to acquire, analyze, or evaluate audio recordings which may be presented as admissible evidence in some official venue [9][10][11].…”