Adaptive audio digital watermark algorithm based on m-sequence modulation

• Published in: 2004 7th International Conference on Signal Processing : proceedings : ICSP'04 : Aug. 31-Sept 4, 2004, Beijing, China Vol. 3; pp. 2401 - 2404 vol.3
• Main Authors: Wang, Hong, Ling Lu, Dashun Que, Junbo Huang
• Format: Conference Proceeding
• Language: English
• Published: Beijing IEEE 2004; Piscataway NJ Pub. House of Electronics Industry
• Subjects: Applied sciences; Continuous wavelet transforms; Copyright protection; Cryptography; Detection, estimation, filtering, equalization, prediction; Digital modulation; Digital signal processing; Discrete wavelet transforms; Exact sciences and technology; Image processing; Information, signal and communications theory; Modulation, demodulation; Robustness; Security; Signal and communications theory; Signal processing; Signal processing algorithms; Signal, noise; Telecommunications and information theory; Watermarking; Image conversion; Die; M-sequences; Acoustic signal; Image processing; Modulated signal; Discrete wavelet transforms; Algorithm; Digital signal; Audio signal; Information protection; Modulation; Binary image; Low pass filter; Digital watermarking
• ISBN: 9780780384064; 0780384067
• DOI: 10.1109/ICOSP.2004.1442264

This paper presents an adaptive audio digital watermark algorithm based on m-sequence modulation. Firstly, the visually recognizable binary watermark image should be converted into the one-dimensional sequence by the algorithm. The sequence is permuted pseudo-randomly and is modulated by m-sequence. Then the digital audio signal is set into segments and the discrete wavelet transform is performed. Finally the modulated signal is embedded in the coefficients with relatively large absolute value on middle frequency range detail signal adoptively. The experimental results show that the watermark is imperceptible and the algorithm is robust to digital audio signal when attacked by low pass filter, re-quantified and so on.