NDLI: Spread spectrum audio watermarking based on perceptual characteristic aware extraction

Content Provider	IET Digital Library
Author	Li, Rangkun Xu, Shuzheng Yang, Huazhong
Abstract	This study presents a high-performance audio watermarking scheme using spread spectrum modulation. Unlike conventional extractors which use simple correlation, this watermarking scheme exploits the perceptual characteristic of the watermarked audio before correlation. It is noted that although the watermark extractor works blindly neither which the original audio signal nor the embedded watermark signal is available, however, the spectral power structure of embedded watermark can be estimated using perceptual analysis methods. With this information, the watermark performance is improved by introducing an estimation-equalisation-correlation based extraction mechanism. The pre-equaliser at the extractor is carefully designed to obtain optimised extraction performance. Moreover, the perceptual analysis and shaping method are improved to make sure the watermark estimation is accurate. The perceptual characteristic aware extraction-based watermarking scheme achieves high embedding capacity up to 43 bps/channels, with low perceptual distortion to the host audio. Experiments on real audio signals show that the proposed watermarking scheme achieves high performance and is robust against various types of attacks.
Starting Page	266
Ending Page	273
Page Count	8
ISSN	17519675
Volume Number	10
e-ISSN	17519683
Issue Number	Issue 3, May (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/10/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2014.0388
Journal	IET Signal Processing
Publisher Date	2016-05-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Audio Signal Audio Watermarking Communication Channel Equalisation And Identification Distortion Embedded Watermark Signal Equaliser Estimation-equalisation-correlation Based Extraction Mechanism Extraction Performance High-performance Audio Watermarking Scheme Low Perceptual Distortion Modulation Modulation And Coding Method Perceptual Analysis Perceptual Analysis Method Perceptual Characteristic Aware Extraction Perceptual Characteristic Aware Extraction-based Watermarking Scheme Preequaliser Radio Link And Equipment Shaping Method Spectral Power Structure Speech And Audio Coding Spread Spectrum Audio Watermarking Spread Spectrum Communication Spread Spectrum Modulation Watermark Estimation Watermark Extractor Watermark Performance Watermarked Audio Watermarking Scheme
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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