A Method of Audio Digital Watermark Based on Discrete Wavelet Transform and Quantization Index Modulation

Abstract:

When a digital watermark is directly embedded into low frequency part of audio, sensitive noises maybe occur. In the paper, a method of audio digital watermark based on quantization index modulation is proposed to solve the problem. At first, audio signal is divided to fragment by audio mask effect. Then low frequency part of discrete wavelet transform (DWT) is extracted. Scrambling watermark is embedded into the low frequency part by quantization index modulation (QIM). The experiment results show that the presented method has a good capacity to fight many attacks.

• Periodical: Applied Mechanics and Materials (Volumes 55-57)
• Pages: 970-974
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.55-57.970
• Online since: May 2011
• Authors: Pan Li He, Tie Sheng Fan
• Keywords: Audio Digital Watermark, Discrete Wavelet Transform (DWT), Quantization Index Modulation (QIM)

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