Tic-Tac, Forgery Time Has Run-Up! Live Acoustic Watermarking For Integrity Check in Forensic Applications

Nita, Valentin A.; Ciobanu, Amelia

doi:10.1109/icassp.2018.8461538

Cited by 8 publications

(2 citation statements)

References 5 publications

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“…They categorized the analysis of audio files in the process of detection into container-based analysis that deals with the file structure and metadata of the audio file (such as timestamp and file format), and content-based analysis which handles the actual bits and bytes of the audio file (such as speaker identity and speech transcript). One of the authentication solutions for audio recordings was proposed by Nita & Ciobanu (Nita & Ciobanu, 2018); they provided a watermark solution. A control signal, the TIC-TAC signal, was the case.…”

Section: Literature Reviewmentioning

confidence: 99%

Verifying the Audio Evidence to Assist Forensic Investigation

Fayyad-Kazan¹,

Hejase²,

Moukadem³

et al. 2021

CIS

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Audio forensics is a field in forensics that is used to authenticate, enhance, and analyze audio files to aid in solving different crime investigations. Audio as a forensic evidence must be enhanced and analyzed to be admissible in courts of law. But more importantly, it must be authenticated in order to prove that it is authentic and no manipulations were done to it. In this paper, an overview on audio forensics is presented, previous related work to this topic is shown, and methodologies for audio enhancement and authentication are explained along with audio tampering ways and signatures presentation.

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Section: Literature Reviewmentioning

confidence: 99%

Verifying the Audio Evidence to Assist Forensic Investigation

Fayyad-Kazan¹,

Hejase²,

Moukadem³

et al. 2021

CIS

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“…The embedding methods should be chosen to satisfy the fourth principle. In [19], the authors propose a sonic watermarking scheme compliant with the four principles defined above, in which ticking sounds are used to mask one low frequency chirp signal. The watermark is embedded as the temporal distance between ticking sounds.…”

mentioning

confidence: 99%

Sonic Watermarking Method for Ensuring the Integrity of Audio Recordings

2020

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Methods for inspecting the integrity of audio recordings become a necessity. The evolution of technology allowed the manufacturing of small, performant, recording devices and significantly decreased the difficulty of audio editing. Any person that participates in a conversation can secretly record it, obtaining their own version of the audio captured using their personal device. The recordings can be easily edited afterwards to change the meaning of the message. The challenge is to prove if recordings were tampered with or not. A reliable solution for this was the highly acclaimed Electrical Network Frequency (ENF) criterion. Newer recording devices are built to avoid picking up the electrical network signal because, from the audio content point of view, it represents noise. Thus, the classic ENF criterion becomes less effective for recordings made with newer devices. The paper describes a novel sonic watermarking (i.e., the watermark is acoustically summed with the dialogue) solution, based on an ambient sound that can be easily controlled and is not suspicious to listeners: the ticking of a clock. This signal is used as a masker for frequency-swept (chirp) signals that are used to encode the ENF and embed it into all the recordings made in a room. The ENF embedded using the proposed watermark solution can be extracted and checked at any later moment to determine if a recording has been tampered with, thus allowing the use of the ENF criterion principles in checking the recordings made with newer devices. The experiments highlight that the method offers very good results in ordinary real-world conditions.

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Real-time temporal audio watermarking for mobile communication

Nita

Stanomir

2020

2020 13th International Conference on Communications (COMM)

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Tic-Tac, Forgery Time Has Run-Up! Live Acoustic Watermarking For Integrity Check in Forensic Applications

Cited by 8 publications

References 5 publications

Verifying the Audio Evidence to Assist Forensic Investigation

Verifying the Audio Evidence to Assist Forensic Investigation

Sonic Watermarking Method for Ensuring the Integrity of Audio Recordings

Real-time temporal audio watermarking for mobile communication

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