DocumentCode
3103202
Title
Digital Watermarking for Digital Audio Signal Based on DWT
Author
Zhang YongPing
Author_Institution
Dept. of Fire Protection Eng., Chinese People´s Armed Police Forces Acad., Langfang, China
fYear
2011
fDate
16-18 Aug. 2011
Firstpage
1
Lastpage
4
Abstract
A special self-synchronizing watermark algorithm for audio signal is proposed in which self properties of audio signals are utilized and synchronization and embedding are processed separately. The low frequency components after DWT have the properties of energy concentration and robustness to interference which act as positioning indexes of watermarks. Characteristics are extracted by filtering the low frequency component. Watermarks are embedded repeatedly at the positions of middle frequency component appointed by these characteristics. The algorithm has perfect robustness and security by using multiple secret controlling and accurate synchronization.
Keywords
audio coding; discrete wavelet transforms; synchronisation; watermarking; digital audio signal; digital watermarking; discrete wavelet transforms; energy concentration; positioning index; secret controlling; Media; Robustness; Signal processing algorithms; Synchronization; Watermarking; Wavelet transforms;
fLanguage
English
Publisher
ieee
Conference_Titel
Internet Technology and Applications (iTAP), 2011 International Conference on
Conference_Location
Wuhan
Print_ISBN
978-1-4244-7253-6
Type
conf
DOI
10.1109/ITAP.2011.6006144
Filename
6006144
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