IBM Systems Journal
Digital communications using chaos
Signal Processing - Special issue on emerging techniques for communication terminals
Robust spread-spectrum audio watermarking
ICASSP '01 Proceedings of the Acoustics, Speech, and Signal Processing, 2001. on IEEE International Conference - Volume 03
Digital Watermarks for Audio Signals
ICMCS '96 Proceedings of the 1996 International Conference on Multimedia Computing and Systems
Robust audio data hiding using correlated quantization with histogram-based detector
IEEE Transactions on Multimedia
Robust audio watermarking in the time domain
IEEE Transactions on Multimedia
Digital audio watermarking in the cepstrum domain
IEEE Transactions on Consumer Electronics
An algorithm for removable visible watermarking
IEEE Transactions on Circuits and Systems for Video Technology
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This paper proposes an unusual method for perceptible watermarking algorithm based on the commercial requirements. An audio file is hosted in the website for commercial purpose with a removable watermarking on a portion of it. The objective of this watermark is contrary to that of conventional watermarking. The watermark degrades the quality of the audio file such that it becomes annoyingly perceptible to human auditory system. Chaos theory is used to generate millions of audibly similar but numerically different versions of the watermarked signal. On the removal of this perceptible watermark, a new imperceptible watermark is inserted in the audio as per the conventional requirements. This perceptible method of watermarking is termed as ink marking, and it provides a novel method for digital right management control. The subjective quality tests and robustness tests indicate that the audio quality is excellent. The algorithm is also robust to signal processing attacks.