Multifunctional audio protection method with digital copyright protection and content authentication

A digital copyright protection, multi-functional technology, applied in speech analysis, instruments, etc., can solve the problem of unable to achieve audio positioning or recovery, and achieve the effect of accurate tamper positioning and strong attack resistance

Inactive Publication Date: 2018-06-22
ANHUI XINHUA MEDIA
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Problems solved by technology

However, these audio watermarking techniques cannot achieve the purpose of locating or recovering tampered audio.

Method used

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  • Multifunctional audio protection method with digital copyright protection and content authentication
  • Multifunctional audio protection method with digital copyright protection and content authentication
  • Multifunctional audio protection method with digital copyright protection and content authentication

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Embodiment Construction

[0043] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0044] see figure 1 : A multi-functional audio protection method for digital copyright protection and content authentication, which uses similarity to calculate the distance of MFCC feature coefficients between different audio frames to obtain similar frames for each frame, and then uses similar frames to restore tampered audio frames, The specific steps of calculating similar frames are as follows:

[0045](1) Divide the original audio signal X into frames by N points to obtain M frames of data F 1 , F 2 ,...,F M ;

[0046] (2) Calculate the MFCCf of each frame i , i=1,2,...,M;

[0047] (3) Calculate the si...

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Abstract

The invention discloses a multifunctional audio protection method with digital copyright protection and content authentication. The method is characterized in that similarity computing is used on distance of MFCC characteristic coefficients of different audio frames to obtain a similar frame of each frame, then the similar frame is utilized to restore an audio frame subjected to tampering, and thespecific steps of calculating the similar frame are as follows: (1) framing is performed an original audio signal X with N points to obtain M frames of data F<1>, F<2>,..., F<M>; (2)MFCCf of eachframe is calculated, wherein i=1, 2,..., M; and (3) similarity S<ij>=VV<j>(||V||||V<j>||) between adjacent frames is calculated, 1<=i<=M, and 1<=j<=M, V and V<j> represent MFCC characteristicvectors corresponding to the ith frame and the jth frame, S<ij> is ranked from big to small, and Frame F<m> corresponding to a maximum distance d<m>(1<=m<=M) is determined to be the similar frame ofF. The method provided by the invention can achieve the purpose of positioning or restoring tampered audio.

Description

technical field [0001] The invention relates to the technical field of digital copyright protection, in particular to a multifunctional audio protection method for digital copyright protection and content authentication. Background technique [0002] In practical applications, the copyright and integrity of multimedia data often need to be protected at the same time, which requires both robust watermarking and vulnerability watermarking in multimedia data. Among them, the robust watermark is used to resist various signal attacks to achieve the purpose of copyright protection; the fragile watermark is used to achieve the integrity authentication of multimedia content and the purpose of locating and recovering tampered audio. At present, many digital audio watermarking techniques for audio copyright protection and content integrity authentication have been proposed. However, these audio watermarking techniques cannot achieve the purpose of locating or recovering the tampered ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/018
CPCG10L19/018
Inventor 曹璐江婷婷田昶何传柱葛菲
Owner ANHUI XINHUA MEDIA
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