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Voice tampering positioning detection method based on quantitative characteristic

A technology for location detection and speech, applied in speech analysis, instruments, etc., can solve problems such as computational complexity, achieve high detection accuracy, avoid computational complexity, and reduce complexity.

Active Publication Date: 2016-06-29
NINGBO UNIV
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a kind of voice tampering and positioning detection method based on quantization characteristics, which is simple in calculation of the detection process, capable of detecting high code rate and high detection accuracy, and intends to solve the problem of MP3 voice The tampering of format characteristics cannot be detected in the case of high bit rate, and the problem of improving the calculation complexity of existing methods

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  • Voice tampering positioning detection method based on quantitative characteristic
  • Voice tampering positioning detection method based on quantitative characteristic
  • Voice tampering positioning detection method based on quantitative characteristic

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Embodiment Construction

[0033] The embodiments of the present invention will be described in detail below in conjunction with the above-mentioned drawings.

[0034] A voice tampering location detection method based on quantization characteristics. It is an in-depth study of the existing MP3 tampering location detection algorithm based on frame offset, and a new method is proposed to describe the quantitative features and perform tampering location detection.

[0035] The detection method involves the introduction of the MP3 encoding process and the introduction of the existing frame offset work, specifically:

[0036] MP3 encoding process

[0037] MP3 is a lossy compressed digital audio coding format, which can remove a large amount of redundant data information without affecting the voice content. In order to ensure the voice quality, according to the human psychoacoustic model, the voice details that most people cannot perceive Remove.

[0038] The complete MP3 audio encoding process such as figure 1 Shown ...

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Abstract

The invention discloses a voice tampering positioning detection method based on a quantitative characteristic. The intensive study can be carried out based on the MP3 tampering position detection algorithm of the frame deviation of the prior art, and the updated detection method is provided for the description of the quantitative characteristic. By adopting the detection method, the frame deviation detection is not required, and then the complicated complexity caused by the frame deviation calculation can be prevented, and then the calculation complexity can be reduced greatly, and at the same time, the high bit rate condition of the inability of the frame deviation detection can be solved, and according to the experiment result, the detection method is provided with the higher detection accuracy.

Description

Technical field [0001] The invention relates to a voice tampering location detection method, in particular to a voice tampering location detection method based on quantization characteristics. Background technique [0002] With the rapid development of digital technology and Internet technology, digital multimedia has been widely used in daily life. People are generating a lot of multimedia information every day, such as: using digital cameras to take videos, take photos, and voice chat. People can share this information with friends on the Internet through Internet technology, which enriches people’s spiritual and cultural life and makes them more convenient. The communication between people benefited from mastering new technologies. However, any technology has two sides. A large number of multimedia editing software can tamper with these digital information. If the tampered information is used illegally, it will bring a great threat to our lives. This is how digital forensics ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/48
Inventor 王让定陶表犁严迪群金超周劲蕾
Owner NINGBO UNIV
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