An Audio Blind Watermarking Algorithm by Modifying the DWT Low-frequency Coefficients
Authors
Chen Xuesong, Li Haotian, Bu Guanglong, Bi Hongbo
Corresponding Author
Chen Xuesong
Available Online November 2013.
- DOI
- 10.2991/icmt-13.2013.55How to use a DOI?
- Keywords
- Audio blind watermarking. DWT. Security
- Abstract
An audio watermarking algorithm by modifying the low-frequency coefficients of DWT is discussed in this paper. Audio signal is divided into many sections, whose quantity is equal to the size of the watermark. The maximal value and the second maximal value of DWT low frequency coefficient can be found in each section. Then we can extract the last non-zero number of the two extreme values. The watermark is embedded based on the two numbers’ parity. We take the encryption twice in order to improve security of the watermark. Experiments show that after some common attacks such as resample, Gauss noise, re-quantization and low-pass filtering, the algorithm has good imperceptibility and robustness.
- Copyright
- © 2013, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Chen Xuesong AU - Li Haotian AU - Bu Guanglong AU - Bi Hongbo PY - 2013/11 DA - 2013/11 TI - An Audio Blind Watermarking Algorithm by Modifying the DWT Low-frequency Coefficients BT - Proceedings of 3rd International Conference on Multimedia Technology(ICMT-13) PB - Atlantis Press SP - 447 EP - 454 SN - 1951-6851 UR - https://doi.org/10.2991/icmt-13.2013.55 DO - 10.2991/icmt-13.2013.55 ID - Xuesong2013/11 ER -