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Study on the Generation of Inaudible Binary Random Number Using Canonical Signed Digit Coding
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 Title & Authors
Study on the Generation of Inaudible Binary Random Number Using Canonical Signed Digit Coding
Nam, MyungWoo; Lee, Young-Seok;
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Digital watermarking is imperceptible and statistically undetectable information embeds into digital data. Most information in digital audio watermarking schemes have used binary random sequences. The embedded binary random sequence distorts and modifies the original data while it plays a vital role in security. In this paper, a binary random sequence to improve imperceptibility in perceptual region of the human auditory system is proposed. The basic idea of this work is a modification of a binary random sequence according to the frequency analysis of adjacent binary digits that have different signs in the sequence. The canonical signed digit code (CSDC) is also applied to modify a general binary random sequence and the pair-matching function between original and its modified version. In our experiment, frequency characteristics of the proposed binary random sequence was evaluated and analyzed by Bark scale representation of frequency and frequency gains.
Imperceptibility;Binary random sequence;CSD;Perceptual region;HAS;
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높은 비가청성을 갖는 믹스 음악의 크기 변조 오디오 워터마킹 기술에 관한 연구,강세구;이영석;

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