A method and system for identifying fraudulent calls by playing recordings

Abstract

The invention provides recognition method and system for tape played phone fraud, and belongs to the technical field of network communication. The method comprises the steps of recording the calling voice after a voice channel between a calling side and a called side is connected; creating a time characteristic value set for the recording file; detecting the voice starting point of the recording file; sequentially extracting a plurality of multi-frame voice messages; storing the number of frames from the effective voice starting point to the ending point of each multi-frame voice message to the time characteristics value set; respectively reading out the time characteristics value set of each phone fraud sample from the phone fraud sample database; respectively comparing the time characteristics values of the recording file and the phone fraud sample, at the same sequence position in each time characteristics value; and counting the quantity o the same time characteristics value of the recording file and the phone fraud sample, in the time characteristics value set, so as to determine whether the voice in the recording file is the same as that in the phone fraud sample. The recognition method and system for tape played phone fraud are able to recognize the tape played phone fraud on a real time.

Description

technical field [0001] The invention relates to a method and system for identifying fraudulent calls by playing recordings, and belongs to the technical field of network communication. Background technique [0002] With the popularization of mobile phones, phone scams emerge in endlessly. Although the relevant government departments have issued reminders to the society and various news media have reported frequently, however, a large number of users are still being cheated every day, and the economic losses are increasing year by year. [0003] The voice sources of fraudulent calls can be divided into two categories: one is the way of playing recordings, that is, playing a pre-recorded fraudulent voice after dialing the called phone. It is possible to make automated fraudulent calls, so there are a large number of them; the other is manual fraudulent methods, that is, real people conduct fraudulent operations after connecting to the called party. This type of fraudulent cal...

AI Technical Summary

Problems solved by technology

This technical solution compares the voiceprint features and call content with the pre-stored fraudster voiceprint feature database and fraud type database. The implementation technology is more complicated, the calculation amount is large, and it is difficult to meet the high real-time requirements in practical applications. Therefore, Not suitable for real-time identification and interruption of fraudulent calls during calls

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