Methods of Time-Frequency Analysis in Authentication of Digital Audio Recordings

• Autorzy: Korycki R.
• Języki publikacji: EN

Abstrakty

EN

This paper describes the problem of tampering detection and discusses the main methods used for authenticity analysis of digital audio recordings. For the first topic, two frequency measurement algorithms based on electric network frequency criterion are applied. Time-frequency analysis is used and improved with reassignment method for purpose of visual inspection of modified recordings. The algorithms are shortly described and exemplary plots are presented with interpretation. The last described method, recently proposed, is based on checking frame offsets in compressed audio files.

Słowa kluczowe

EN

tampering detection; audio authenticity analysis; media authentication; electric network frequency; time-frequency analysis; digital audio forensics; inverse decoder; MP3; compressed audio; perceptual audio coding

• Wydawca: Polish Academy of Sciences, Committee of Electronics and Telecommunication
• Czasopismo: International Journal of Electronics and Telecommunications
• Rocznik: 2010
• Tom: Vol. 56, No. 3
• Strony: 257--262
• Opis fizyczny: Bibliogr. 24 poz., wykr.

Twórcy

autor

Korycki R.

• Institute of Radioelectronics, Warsaw University of Technology, Nowowiejska 15/19, 00-665 Warsaw, Poland,

Bibliografia

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