Coding parameter statistical feature-based AAC sound recording document source identification method

A technology for recording files and recognition methods, which is applied in speech recognition, speech analysis, electrical components, etc., and can solve problems such as coding parameter selection and usage differences.

CN105845132AInactive Publication Date: 2016-08-10NINGBO UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-08-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a coding parameter statistical feature-based AAC (advanced audio coding) sound recording document source identification method. According to the design thought of the invention, the use features and statistical features of a plurality of coding parameters of AAC sound recording documents of smart phones are analyzed; the tendencies and characteristics of using the coding parameters when the mobile phones generate the AAC sound recording documents are found out; and features for distinguishing phone models are constructed; and therefore, accurate identification of the sources of the AAC sound recording documents can be realized. The AAC sound recording document source identification method has the advantages of high recognition accuracy, convenience in operation and the like.
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Description

technical field

[0001] The invention relates to a method for identifying the source of an AAC recording file, in particular to a method for identifying the source of an AAC recording file based on the statistical characteristics of encoding parameters. Background technique

[0002] With the advent of the big data era, digital multimedia is experiencing explosive growth. But at the same time, the increase in the magnitude and frequency of multimedia data also promotes the rapid development of multimedia editing software, which makes the forgery and tampering of multimedia data easier and easier. Therefore, the growth of multimedia data scale and the development of editing software make our life full of a large amount of untrue and untrustworthy multimedia data. In order to verify the originality, authenticity and integrity of multimedia data, multimedia forensics technology came into being. At present, the research on digital multimedia forensics at home and abroad is mainl...

Examples

Embodiment Construction

[0032] The embodiments of the present invention will be described in detail below according to the above-mentioned drawings.

[0033] A method for identifying the source of an AAC recording file based on the statistical characteristics of encoding parameters involves studying the use characteristics and statistical characteristics of the encoding parameters of the AAC recording file to determine which brand and model of mobile phone an AAC recording file is recorded by.

[0034] In this recognition method, a concept description about AAC recording files is involved, specifically:

[0035] Overview of the AAC encoding standard

[0036]Advanced Audio Coding (Advanced Audio Coding, AAC) is a new generation of audio coding standards, it is an important part of the ISO / IEC MPEG-2 and MPEG-4 standards. MPEG-2 AAC was released in 1997. As the successor of MP3, it has better sound quality than MP3 audio at the same bit rate, especially at low bit rate. MPEG-2 AAC defines three profi...