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Tampering Detection in Speech Signals by Semi-Fragile Watermarking Based on Singular-Spectrum Analysis

  • Jessada KarnjanaEmail author
  • Masashi Unoki
  • Pakinee Aimmanee
  • Chai Wutiwiwatchai
Conference paper
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 63)

Abstract

To solve the problem of unauthorized modification in speech signals, this paper proposes a novel speech-tampering-detection scheme by using the semi-fragile watermarking based on the singular-spectrum analysis (SSA). The SSA is used to analyze the speech signals of which the singular spectra are extracted. The watermark (e.g., signature in-formation) is embedded into those signals by modifying some parts of the singular spectra according to the watermark bit. By comparing the extracted watermark with the original one, the tampered segments of the speech signals are identified and located. The evaluation results show that the proposed scheme is fragile to several malicious attacks but robust against other signal-processing operations. It also satisfies the inaudibility criteria. The proposed scheme not only can locate the tampered locations, but it also can make a prediction about the tampering types and the tampering strength.

Keywords

singular-spectrum analysis singular values speech-tampering detection semi-fragile watermarking inaudible watermarking 

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Jessada Karnjana
    • 1
    • 2
    Email author
  • Masashi Unoki
    • 1
  • Pakinee Aimmanee
    • 2
  • Chai Wutiwiwatchai
    • 3
  1. 1.School of Information ScienceJapan Advanced Institute of Science and TechnologyNomi, IshikawaJapan
  2. 2.Sirindhorn International Institute of TechnologyThammasat UniversityMuangThailand
  3. 3.National Electronics and Computer Technology CenterKhlong LuangThailand

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