Research

The National Center for Media Forensics actively develops basic and applied research projects in areas affecting the analysis and recovery of forensic media. Areas include the enhancement and authentication of forensic audio and imagery as well as biometric comparisons and event analyses from forensic recordings.

PUBLISHED RESEARCH

Multimedia Stream Hashing: A Forensic Method for Content Verification by Gregory S. Wales, Jeff M. Smith, Douglas S. Lacey, and Catalin Grigoras. Journal of Forensic Sciences. 2022.

A Quantitative Analysis of Video Software Frame Extraction Methods for Use in Forensic Science by Gregory S. Wales, Christopher Lemon, Gregory Savage, Stephen Wells, and Jesus Valenzuela . American Academy of Forensic Sciences 74th Annual Scientific Meeting. 2022.

A Review of Axon Citizen from a Forensic Perspective as a Tool for Law Enforcement Investigations by Jesus Valenzuela, Gretchel Lomboy, Catalin Grigoras, and Jason Latham. American Academy of Forensic Sciences 74th Annual Scientific Meeting. 2022.

An Analysis of Audio Recordings Made using the Voice Recorder Application on Android Phones by Gina DeAngelis, Jeff M. Smith, Catalin Grigoras, and Marcus Rogers. American Academy of Forensic Sciences 73rd Annual Scientific Meeting. 2021.

A Forensic Analysis of Digital Speech Standard (DSS) Files by Catalin Grigoras, Cole Whitecotton, Jeff M. Smith, Douglas S. Lacey, Bruce E. Koenig, and James Zjalic. American Academy of Forensic Sciences 73rd Annual Scientific Meeting. 2021.

File Structure Analysis of Media Files Transmitted and Received Over WhatsApp by Henry L. Risemberg, Catalin Grigoras, and Jeff M. Smith. American Academy of Forensic Sciences 73rd Annual Scientific Meeting. 2021.

A Study of Video Conferencing Software from an Authentication Perspective by Cole Whitecotton, Gretchel Lomboy, and James Zjalic. American Academy of Forensic Sciences 73rd Annual Scientific Meeting. 2021.

A Proposed Framework for Digital Video Authentication by Gregory Wales, Catalin Grigoras, and Jeff M. Smith. American Academy of Forensic Sciences 72nd Annual Scientific Meeting. 2020.

An Updated Triage Approach for Voice Memos Recordings iOS 12.x by Cole Whitecotton. Audio Engineering Society International Conference on Audio Forensics. 2019.

Forensic Analysis of AAC Encoding on Apple iPhone Voice Memos Recordings by Catalin Grigoras and Jeff M. Smith. Audio Engineering Society International Conference on Audio Forensics. 2019.

iPhone Video Metadata: What Can it Teach Us About a Recordings History? by Cole Whitecotton and James Zjalic. American Academy of Forensic Sciences 70th Annual Scientific Meeting. 2018.

An Audio Enhancement Framework for Forensic Purposes by Catalin Grigoras, Jeff M. Smith, and James Zjalic. American Academy of Forensic Sciences 70th Annual Scientific Meeting. 2018.

Time Domain Analysis of Lossy Compression Decoding Artifacts by Catalin Grigoras and Jeff M. Smith. American Academy of Forensic Sciences 70th Annual Scientific Meeting. 2018.

Digital Image Recompression Analysis: Twitter by Gretchel Lomboy, Catalin Grigoras, and Jeff M. Smith. American Academy of Forensic Sciences 70th Annual Scientific Meeting. 2018.

Large Scale Test of Digital Audio File Structure and Format for Forensic Analysis by Catalin Grigoras and Jeff M. Smith. Audio Engineering Society International Conference on Audio Forensics. 2017.

A Low Cost, Cloud Based, Portable, Remote ENF System by James Zjalic, Catalin Grigoras, and Jeff M. Smith. Audio Engineering Society International Conference on Audio Forensics. 2017.

Triage Approach for the Forensic Analysis of Apple iOS Audio Files Recorded Using the "Voice Memos" App by Jeff M. Smith, Douglas Lacey, Bruce Koenig, and Catalin Grigoras. Audio Engineering Society International Conference on Audio Forensics. 2017.

Structure and Format Analysis of Lossy Compressed Audio Files by Catalin Grigoras and Jeff M. Smith. American Academy of Forensic Sciences 69th Annual Scientific Meeting. 2017.

An Analysis of Apple iOS Effects on Format and Metadata Structure of Audio Files Recorded Using the Native “Voice Memos” App by Jeff M. Smith, Douglas S. Lacey, Catalin Grigoras, and Bruce E. Koenig. American Academy of Forensic Sciences 69th Annual Scientific Meeting. 2017.

2016 INTERPOL 18th IFSMS Review Papers by Catalin Grigoras, Jeff M. Smith, and Andrzej Drygajlo. Interpol 18th International Forensic Science Managers Symposium. 2016.

Forensic Analysis of Digital Audio File Structures and Formats by Catalin Grigoras and Jeff M. Smith. American Academy of Forensic Sciences 68th Annual Scientific Meeting. 2016.

Proposed Analytical Framework for Electronically Frequency/Pitch Modified Voices by Eliud Bonilla, Catalin Grigoras, and Jeff M. Smith. American Academy of Forensic Sciences 68th Annual Scientific Meeting. 2016.

Source Identification of High-Definition Videos – A Forensic Analysis of Downloaders and YouTube Video Compression Using a Group of Action Cameras by Zac P. Giammarrusco, Catalin Grigoras, and Jeff M. Smith. American Academy of Forensic Sciences 68th Annual Scientific Meeting. 2016.

Quantization Level Analysis for Forensic Media Authentication by Catalin Grigoras and Jeff M. Smith. Audio Engineering Society 54th International Conference: Audio Forensics. 2014.

Forensic Audio Analysis Review 2010-2013 by Catalin Grigoras, Jeff M. Smith, Geoffrey Stewart Morrison, and Ewald Enzinger. Interpol 17th International Forensic Science Managers Symposium. 2013.

Digital Imaging: Enhancement and Authentication by Catalin Grigoras and Jeff M. Smith. In Encyclopedia of Forensic Sciences, edited by Jay A. Siegel and Pekka J. Saukko. Second Edition. Waltham: Academic Press. 2013.

Audio Enhancement and Authentication by Catalin Grigoras and Jeff M. Smith. In Encyclopedia of Forensic Sciences, edited by Jay A. Siegel and Pekka J. Saukko. Second Edition. Waltham: Academic Press. 2013.

Evaluation of the Average DC Offset Values for Nine Small Digital Audio Recorders by Bruce E. Koenig, Douglas S. Lacey, Catalin Grigoras, Suzana Galic Price, and Jeff M. Smith. Journal of the Audio Engineering Society, Volume 61, Issue 6. June 2013.

Analytical Framework for Digital Audio Authentication by Catalin Grigoras, Daniel Rappaport, and Jeff M. Smith. Audio Engineering Society 46th International Conference: Audio Forensics. 2012.

Advances in ENF Analysis for Digital Media Authentication by Catalin Grigoras and Jeff M. Smith. Audio Engineering Society 46th International Conference: Audio Forensics. 2012.

Evaluation of the Average DC Offset Values for Nine Small Digital Audio Recorders by Bruce E. Koenig, Douglas S. Lacey, Catalin Grigoras, Suzana Galic Price, and Jeff M. Smith. Audio Engineering Society 46th International Conference: Audio Forensics. 2012. <link in new tab to >

Advances in ENF Database Configuration for Forensic Authentication of Digital Media by Catalin Grigoras, Jeff M. Smith, and Christopher Jenkins. Audio Engineering Society 131st Convention. 2011.

Statistical Tools for Multimedia Forensics by Catalin Grigoras. Audio Engineering Society 39th International Conference: Audio Forensics. 2010.

Computer Forensics for the Forensic Audio Professional by Marcus K .Rogers and Jeff M. Smith. Audio Engineering Society 39th International Conference: Audio Forensics. 2010.