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                            Funding & Awards
 Fundamental Research to Improve the Understanding of the Accuracy, Reliability, and Validity of Using the ENF Criterion for the Forensic Authentication of Digital Recordings
Award Information
Awardee
              Virginia Polytechnic Institute and State University
Award #
              2009-DN-BX-K233
Funding Category
              Competitive
Location
                    Blacksburg, VA
Congressional District
              6
Status
              Closed
Funding First Awarded
              2009
Total funding (to date)
              $864,638
Original Solicitation
              NIJ FY 09 Fundamental Research to Improve Understanding of the Accuracy, Reliability, and Measurement Validity of Forensic Science Disciplines
Description of original award (Fiscal Year 2009, $864,638)
The field of audio recording authentication is a complex forensic science forming an important function of a forensic audio laboratory. Methods for the forensic examination of analog recordings are well established; however, digital recordings have now become more commonplace than the analog variety. The signal characteristics associated with digital recordings are completely different than that of analog, and additional techniques for assessing the integrity of a suspect digital recording are required. One such technique is the Electric Network Frequency (ENF) Criterion. The purpose of this proposal is to do fundamental research directed toward improving the understanding of the accuracy, reliability, and measurement validity of using the ENF Criterion in the forensic analysis of digital recordings. One of the goals of this research is to determine the accuracy and reliability of using ENF to determine the time a recording took place. With regard to the ENF procedure itself, studies need be conducted to help better quantitatively understand how well the various methods for obtaining ENF from digital recording work with regard to their accuracy and reliability. With regard to the matching process that is used to compare target ENF with reference ENF, various quantitative matching methods will be investigated.
ca/ncf



  
Grant-Funded Publications
        
                      An improved Discrete Fourier Transform-based algorithm for electric network frequency extraction
                  Application of power system frequency for digital audio authentication
                  Power grid frequency data conditioning using robust statistics and B-spline function

  
Date Created: September 22, 2009
    
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