Voice integrity protection method based on digital fingerprint

A technology of integrity protection and digital fingerprinting, applied in speech analysis, digital transmission systems, instruments, etc., can solve problems that remain at the theoretical level and are rare in engineering practice

Inactive Publication Date: 2010-09-29
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0014] Judging from the development status of digital watermarking products, since the digital watermarking technology has not yet matured, most of the research only stays at the theoretical level, so there are not many engineering practice schemes formed, and this invention proposes a relatively mature digital watermarking Technology Engineering Applied Methods

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  • Voice integrity protection method based on digital fingerprint
  • Voice integrity protection method based on digital fingerprint
  • Voice integrity protection method based on digital fingerprint

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Embodiment Construction

[0078] The implementation method of digital watermark technology proposed by the invention is suitable for embedded hardware platforms, especially embedded real-time voice signal processing platforms based on DSP chips. The watermark data processing algorithm, the watermark embedding extraction algorithm, and the sound signal integrity verification algorithm adopted in the method all have the advantages of simple algorithm principle, fast operation speed, and low requirements on hardware resources. The present invention utilizes a DSP embedded voice signal processing platform and successfully develops a set of digital watermarking technology application equipment according to the above-mentioned design scheme. The DSP embedded hardware platform adopted in the present invention has a certain programmable capability and data storage function, and is equipped with an audio signal acquisition module and a USB module, and information interaction with the PC can be realized through t...

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Abstract

The present invention discloses a voice integrity protection method based on digital fingerprint, which develops a relatively perfect method for the realization of audio integrity protection. The method first provides a combined watermarked data coding / decoding method based on trellis coding, BCH coding and CRC coding to improve the error code correcting performance of a system, then a watermark extraction synchronizing method using an energy synchronization head signal as a positioning standard and re-synchronization as complementary means to realize an accurate positioning on watermark extraction operation, and finally a voice integrity protection method taking watermark information as a primary determination criterion and the abstract of the watermark information as an auxiliary determination criterion to realize the core technology of voice integrity validation; according to the method, the user can transparently embed voice integrity protection information into a voice signal in real time during normal communication.

Description

technical field [0001] The invention relates to various information processing technologies such as digital watermarking, voice communication, and data coding. In short, the present invention proposes a new voice digital watermarking technology implementation method, which realizes the application of embedding anti-compression digital fingerprint data into the voice signal in real time during the voice communication process, thereby providing integrity protection for the voice signal need. Background technique [0002] In the past two decades, the personal communication business has developed vigorously. First, fixed telephones entered thousands of households to create a convenient communication environment for people. Then mobile communication services also entered people's daily life, further shortening the distance between people. . In this environment, the information collection methods of the news media have also undergone great changes, and a large number of telephon...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/00H04L1/00G10L19/018
Inventor 张茹曹晨磊刘玮立陈刚钮心忻
Owner BEIJING UNIV OF POSTS & TELECOMM
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