Method and system for automatically identifying voice recording equipment source

A technology of recording equipment and recognition methods, applied in speech recognition, speech analysis, instruments, etc., can solve the problems of blurred information of recording equipment, and achieve the effect of high efficiency and low complexity
CN102394062AInactive Publication Date: 2012-03-28SOUTH CHINA UNIV OF TECH
4 Cites 33 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2012-03-28
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to the technical fields of intelligent voice signal processing, mode identification and artificial intelligence, and in particular relates to a method and system for automatically identifying a voice recording equipment source. The method comprises the following steps of: a, extracting a characteristic of voice recording equipment from a voice signal; b, constructing a statistical model of the voice recording equipment by using a Gaussian mixture model-universal background model (GMM-UBM); and c, performing classification judgment by using a normalized likelihood as a final score. Different voice recording equipment can comprise different equipment noises; in the method and the system, the characteristics of the voice recording equipment are extracted by using silence fields and the statistical model of the voice recording equipment is constructed so as to perform the classification and identification on the equipment. By the technical scheme in the embodiment of the invention, the extracted characteristic dimension, the computing complexity and the error identification rate are low.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical fields of intelligent voice signal processing, pattern recognition and artificial intelligence, in particular to a method and system for automatic recording device source recognition. Background technique

[0002] With the continuous development of computer technology, powerful digital multimedia editing software makes it easier to modify and edit digital audio, image and video data. Although most people modify and edit digital multimedia just to enhance its performance, there are also some people who intentionally or even maliciously spread some carefully tampered and forged multimedia data for various purposes. Once tampered multimedia data is widely used in official media, scientific discoveries, insurance and court evidence, it will undoubtedly have a serious impact on various aspects of society, politics and military affairs. Therefore, there is a need for an objective, impartial, and capable multimedia veri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More