Abstract

In this paper, secure audio forensic mark algorithm to trace the illegal distribution is proposed. The proposed algorithm uses off-axis hologram when make the forensic mark for embedding into the audio. Embedding and extracting is performed in the DWT domain, and the Arnold transform of the forensic mark is used for improving the security. The hologram generator makes the hologram of the Arnold transformed mark. Because of the characteristics of the off-axis hologram, the proposed algorithm can embed high capacity information and extract without the original signal.

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