DocumentCode :
2360766
Title :
A Perceptually Adaptive and Retrievable QIM Scheme for Efficient Blind Audio Watermarking
Author :
Hu, Hwai-Tsu ; Li, Wan-Cyun
Author_Institution :
Dept. of Electron. Eng., Nat. I-Lan Univ., I-Lan, Taiwan
fYear :
2012
fDate :
23-25 May 2012
Firstpage :
1
Lastpage :
5
Abstract :
This study proposes a feasible way to incorporate the quantization index modulation (QIM) scheme into a framework jointly formed by the discrete wavelet packet transform (DWPT) and discrete cosine transform (DCT) in the field of audio watermarking. To achieve a balance between the robustness and imperceptibility, an adaptive QIM has been developed under the guidance of the human auditory masking effect while carrying out frame synchronization and watermark embedding. An iterative algorithm is introduced to ensure a precise retrieval of the original quantization step from the watermarked signal without referring to auxiliary information. The effectiveness of the proposed scheme has been proven using the perceptual evaluation of audio quality (PEAQ) and the bit error rates of the recovered watermark under common digital signal processing attacks.
Keywords :
audio watermarking; discrete wavelet transforms; error statistics; quantisation (signal); synchronisation; DCT; DWPT; PEAQ; bit error rates; digital signal processing attacks; discrete cosine transform; discrete wavelet packet transform; efficient blind audio watermarking; frame synchronization; human auditory masking effect; perceptual evaluation of audio quality; perceptually adaptive QIM scheme; quantization index modulation; quantization step retrieval; recovered watermark; retrievable QIM scheme; watermark embedding; watermarked signal; Discrete cosine transforms; Discrete wavelet transforms; Masking threshold; Quantization; Robustness; Synchronization; Watermarking;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Science and Applications (ICISA), 2012 International Conference on
Conference_Location :
Suwon
Print_ISBN :
978-1-4673-1402-2
Type :
conf
DOI :
10.1109/ICISA.2012.6220952
Filename :
6220952
Link To Document :
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