Time-frequency-based speech regions characterization and eigenvalue decomposition applied to speech watermarking

  • Authors:
  • Irena Orović;Srdjan Stanković

  • Affiliations:
  • Faculty of Electrical Engineering, University of Montenegro, Podgorica, Montenegro;Faculty of Electrical Engineering, University of Montenegro, Podgorica, Montenegro

  • Venue:
  • EURASIP Journal on Advances in Signal Processing - Special issue on time-frequency analysis and its applications to multimedia signals
  • Year:
  • 2010

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Abstract

The eigenvalues decomposition based on the S-method is employed to extract the specific time-frequency characteristics of speech signals. This approach is used to create a flexible speech watermark, shaped according to the time-frequency characteristics of the host signal. Also, the Hermite projection method is applied for characterization of speech regions. Namely, time-frequency regions that contain voiced components are selected for watermarking. The watermark detection is performed in the time-frequency domain as well. The theory is tested on several examples.