Recording attack prevention voiceprint recognition method and device and access control system

Abstract

The invention discloses a recording attack prevention voiceprint recognition method and device and an access control system. The method comprises the following steps of obtaining an audio to be detected; extracting a first MFCC feature vector, a first GFCC feature vector and a first CQCC feature vector of the audio to be detected; synthesizing the first MFCC feature vector, the first GFCC featurevector and the first CQCC feature vector; obtaining the first acoustic feature vector of the audio to be detected; performing matching degree comparison on the first acoustic feature vector, a recording acoustic feature model obtained through the training by an SVM classifier in the preset training template base and a real voice acoustic feature model; judging whether the first matching degree ofthe first acoustic feature vector and the recording acoustic feature vector model is greater than or equal to the second matching degree of the first acoustic feature and the real voice acoustic feature vector model or not; if so, judging that the audio to be detected is the recording audio; if not, judging that the audio to be detected is the real voice audio. The technical problems that the existing speaker recognition system has low voice recognition accuracy and relies on the specific text are solved.

Description

technical field [0001] The invention relates to the technical field of voice authentication, in particular to a voiceprint authentication method, device and access control system for preventing recording attacks. Background technique [0002] With the development of information technology, some technical means of undermining security are also constantly improving. At present, the attack means of impersonating the identity of the speaker and recording the speaker's voice are the most common attack means faced by the speaker recognition system. The means of impersonating the speaker's identity is generally to use some techniques such as imitating the speaker's pronunciation habits and intonation to try to impersonate the speaker's identity to enter the speaker recognition system. [0003] Recording attack is a technical method that uses high-fidelity recording equipment to record the voice of the target person, and then uses the recorded audio to crack the voiceprint authentic...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a voiceprint authentication method, device, and access control system for preventing recording attacks, which are used to solve the technical problems of low speech recognition accuracy and relying on specified text in existing speaker recognition systems

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