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Audio frequency watermark algorithm based on chaos system

An audio watermarking and chaotic system technology, applied in the computer field, can solve the problems of insufficient anti-geometric attack and weak robustness, and achieve the effects of improving watermarking efficiency, robustness, and synchronization problems

Inactive Publication Date: 2016-03-02
GUANGDONG UNIV OF PETROCHEMICAL TECH
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Problems solved by technology

[0003] At present, the traditional watermarking algorithm has insufficient anti-geometric attack and weak robustness.

Method used

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  • Audio frequency watermark algorithm based on chaos system
  • Audio frequency watermark algorithm based on chaos system
  • Audio frequency watermark algorithm based on chaos system

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Embodiment Construction

[0030] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with the accompanying drawings and specific examples.

[0031] 1 Watermark embedding process

[0032] The watermark is embedded in the wavelet domain, and the embedding process of the watermark mainly includes the front-end processing of the watermark and the embedding of data. The front-end processing of the watermark includes the encryption of the audio watermark and the positioning of the watermark embedding point. The encryption of the watermark increases the difficulty for the attacker to obtain the watermark; the positioning of the watermark embedding point is to increase the security of the watermark and better balance the robustness and imperceptibility of the watermark Conflict between performance requirements; data embedding is to modify selected audio coefficients ...

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Abstract

The invention discloses an audio frequency watermark algorithm based on a chaotic system, comprising steps of utilizing a related general chaos synchronization theorem to construct a new chaos synchronization system on the basis of an existing chaotic system, and applying a chaos series generated by the chaos synchronization system into a digital watermark after a series of processing. The audio frequency watermark algorithm disclosed by the invention can better prevent illegal manipulation and copy of the digital product. The algorithm appropriately applies the chaos sequence generated by the chaos synchronization system into the watermark embedding and detection. The audio frequency watermark algorithm not only improves the robustness of the audio frequency, but also accurately positions the embedding position of the watermark information, which improves the synchronization of the watermark information.

Description

technical field [0001] The invention belongs to the technical field of computers and relates to an audio watermarking algorithm based on a chaotic system. Background technique [0002] With the development of the times, the way of communication of social civilization has slowly evolved. Nowadays, the way for people to obtain information and knowledge in the 21st century is slowly changing to the Internet. With the rapid development of computer technology and network technology, most people are more I am willing to obtain information from the Internet, but precisely because it is too convenient to obtain information on the Internet, people often copy and alter other people's articles and knowledge in large numbers, which puts our independent intellectual property rights to a serious test. At the same time This weakens people's ability to think independently to a certain extent, and restricts the development of social innovation. Everything has two sides. The progress of netw...

Claims

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Application Information

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IPC IPC(8): G10L19/018H04L9/00
CPCG10L19/018H04L9/001
Inventor 崔得龙彭志平柯文德左敬龙
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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