Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Digital Audio Watermark Using Wavelet Transform and Masking Effect

웨이브릿과 마스킹 효과를 이용한 디지털 오디오 워터마킹

  • Hwang, Won-Young (Myongji University, Division of Electrical Information Control Engineering) ;
  • Kang, Hwan-Il (Myongji University, Division of Electrical Information Control Engineering) ;
  • Han, Seung-Soo (Myongji University, Division of Electrical Information Control Engineering) ;
  • Kim, Kab-Il (Myongji University, Division of Electrical Information Control Engineering) ;
  • Kang, Hwan-Soo (Dongyang Technical College, Department of Electronic Commerce)
  • Published : 2003.11.01
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Abstract

In this paper, we propose a new digital audio watermarking technique with the wavelet transform. The watermark is embedded by eliminating unnecessary information of audio signal based on human auditory system (HAS). This algorithm is an audio watermarking method, which does not require any original audio information in watermark extraction process. In this paper, the masking effect is used for audio watermarking, that is, post-tempera] masking effect. We construct the window with the synchronization signal and we extract the best frame in the window by using the zero-crossing rate (ZCR) and the energy of the audio signal. The watermark may be extracted by using the correlation of the watermark signal and the portion of the frame. Experimental results show good robustness against MPEG1-layer3 compression and other common signal processing manipulations. All the attacks are made after the D/A/D conversion.

Keywords