Method for identifying sound recording locations

Abstract

The invention provides a method for identifying sound recording locations. The method includes reducing dimensions of data of power grid frequencies; extracting the power grid frequencies in audio frequencies; building identification models of BP (back propagation) neural networks; simulating annealing searching identifying results; converting the identifying results into particular locations. The method has the advantages that the problem that sound recording locations cannot be identified by the traditional method for collecting evidences by the aid of audio frequencies is solved; the method is used for identifying the sound recording locations mainly by the aid of the BP neural networks and accordingly is high in efficiency; the identifying speeds can be increased owing to a KDA (knowledge driven automation) dimension reducing algorithm; the sound recording locations can be quickly determined by the aid of the simulated annealing searching identifying results; the method is based on the BP neural networks, the sound recording locations are identified on the basis of the power grid frequencies, and accordingly the difficult problem that the sound recording locations cannot be identified by the traditional method is solved.

Description

technical field [0001] The invention relates to a method for identifying a recording location. Background technique [0002] Nowadays, with the digital technology in the information field advancing to all areas of human life, the audio digital storage method has almost replaced the traditional storage method. At the same time, the rapid development of computer technology has made digital audio editing easier and more professional. [0003] According to the survey statistics of relevant departments: the crime rate based on digital audio is increasing year by year. According to Article 69 of the Supreme People's Court's "Several Provisions on Evidence in Civil Procedures", audio-visual materials with doubtful points cannot be used alone as the basis for determining the facts of a case. When digital audio files are used as evidence in court, their originality and integrity are often areas of concern. However, under the premise that the recording time and recording location c...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for identifying the recording location, using BP neural network as the main identification method, which has high efficiency and solves the problem that the existing digital audio forensics technology is difficult to identify the recording location

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