Time-spread echo method for digital audio watermarking using PN sequences

Byeong Seob Ko, Ryouichi Nishimura, Yôiti Suzuki

研究成果: Conference article査読

48 被引用数 (Scopus)


Conventional watermarking techniques based on echo hiding provide many benefits, but with several weak points, for example, a lenient decoding process, weakness against multiple encoding attack, etc. In this paper, to improve the weak points of conventional echo hiding, we propose a time-spread echo as an alternative to the conventional echo in the echo hiding. Spreading an echo is performed in the impulse response domain using PN sequences. We also evaluate the characteristics of the proposed method as a function of two parameters: gain and length of PN sequences used in spreading an echo. The proposed method is expected to provide more natural and colorless sounds as well as better imperceptibility of distortion as compared with conventional echo hiding.

ジャーナルICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
出版ステータスPublished - 2002
イベント2002 IEEE International Conference on Acoustic, Speech and Signal Processing - Orlando, FL, United States
継続期間: 2002 5月 132002 5月 17

ASJC Scopus subject areas

  • ソフトウェア
  • 信号処理
  • 電子工学および電気工学


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