Quantization Level for Forensic Media Authentication

Grigoras C, Smith JM. Quantization Level for Forensic Media Authentication. In: AES Conference: 54th International Conference: Audio Forensics. Audio Engineering Society; 2014. Paper 4-1. Available from: https://aes.org/publications/elibrary-page/?id=17320

@inproceedings{Grigoras2014_17320,
  author = {Grigoras, Catalin and Smith, Jeff M.},
  title = {{Quantization Level for Forensic Media Authentication}},
  booktitle = {AES Conference: 54th International Conference: Audio Forensics},
  note = {Paper 4-1},
  year = {2014},
  month = jun,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17320}
}

TY  - CPAPER
TI  - Quantization Level for Forensic Media Authentication
AU  - Grigoras, Catalin
AU  - Smith, Jeff M.
T2  - AES Conference: 54th International Conference: Audio Forensics
M1  - Paper 4-1
PY  - 2014
DA  - 2014/06/06
UR  - https://aes.org/publications/elibrary-page/?id=17320
PB  - Audio Engineering Society
LA  - en
AB  - The authentication of digital multimedia evidence can play important roles in both judicial and extrajudicial cases. Over the past decade or so, various techniques and methodologies have been proposed for forensic audio and video authentication. This paper proposes a new method for forensic media authentication based on quantization level analysis (QL) of a digital audio signal. Five methods for calculating QL are provided including: QL histogram, QL length, greatest common divisor, Fast Fourier Transform (FFT), and Cepstrum. Examples of QL analysis are provided to demonstrate its use in the detection a recording’s native QL versus the file format bit depth, the detection of signal processing, and the analysis of consistency with reference recordings (recorder attribution).
ER  -