Adaptive Spread Spectrum Based Watermarking of Speech
نویسندگان
چکیده
A signal adaptive spread spectrum based inaudible speech watermarking technique has been proposed in this paper. The strength of the watermark to be embedded is adapted to the local signal energy such that the watermark is just audible and detection is efficient. Spread Spectrum technique is used to make the watermarking technique more robust against attacks such as watermark removal and impairment attacks. The detection algorithm uses a correlation detector and does not require the knowledge of the original unwatermarked signal. The scheme was tested for various 13-bit speech samples of Global System for Mobile (GSM) cellular communications.
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تاریخ انتشار 2003