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In echo hiding, watermark data is embedded into the host signal by introducing echoes of different delays and is subsequently extracted using cepstral analysis. The choice of echo kernel determines the fidelity and robustness performance of the watermarking scheme. In this paper we propose the extended bipolar echo kernel, which greatly improves the fidelity of the watermarked signal without compromising...
Echo hiding is a steganographic technique that hides messages in audio.This paper proposes a scheme that improves the robustness of echo hiding. A self-synchronizing code set called the T-Codes is used to encode messages prior to their concealment using echo hiding. This is shown to increase message recovery and in turn robustness of echo hiding.
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