Log-scaling watermark detection in digital audio watermarking

Byeong Seob Ko, Ryouichi Nishimura, Yôiti Suzuki

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)

Abstract

A pitch-scaling modification of a watermaked signal is a severe attack on audio watermarking techniques. In particular, watermarking techniques using a pseudonoise (PN) sequence as a secret key are fragile in the face of this modification because of the desynchronization between the original and embedded PN sequences. We, therefore, propose a log-scaling watermark detection method in this paper to cope with this problem. This method is based on a general logarithm operation in the frequency or quef'rency axis in the decoding process. This method is also advantageous in that no other modification of the original embedding process is necessary. The validity of the log-scaling watermark detection method herein proposed is evaluated by employing the time-spread echo method as an example of such a watermarking technique.

Original languageEnglish
Pages (from-to)III81-III84
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume3
Publication statusPublished - 2004 Sep 28
EventProceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing - Montreal, Que, Canada
Duration: 2004 May 172004 May 21

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

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