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Voiceprint password authentication method and system

A password authentication and voiceprint technology, which is applied in speech analysis, instruments, etc., can solve the problems of voiceprint password system authentication performance loss, inability to solve user time drift, difficulty in obtaining voiceprint password system, etc.

Active Publication Date: 2019-11-15
IFLYTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the method needs to utilize a large amount of cross-scene data of the registered speaker to train the channel factor load matrix; if the training data is insufficient, it will bring a larger loss to the authentication performance of the voiceprint encryption system, but the acquisition of a large amount of data is very important for the voiceprint encryption system. systems are often difficult
In addition, the pre-trained channel factor loading matrix can only represent the state during training, but cannot solve the problem of user login time drift

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  • Voiceprint password authentication method and system
  • Voiceprint password authentication method and system
  • Voiceprint password authentication method and system

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Embodiment Construction

[0085] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0086] Such as figure 1 Shown is a flow chart of the voiceprint password authentication method of the embodiment of the present invention, including the following steps:

[0087] Step 101, receiving voice data of a logged-in user, and using the voice data as test voice data.

[0088] Step 102, extracting features of the test voice data to obtain test voice features.

[0089] In the embodiment of the present invention, the test voice feature and the registration voice feature can use 39-dimensional MFCC (Mel-scale Frequency Cepstral Coefficients, Mel frequency cepstral coefficients) as the spectrum feature, for the convenience of description, the test voice feature will be used later as Y= {y 1 ,y 2 ,...,y T...

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Abstract

The invention discloses a voiceprint password authentication method and system. The method comprises that voice data of a login user is received, and serves as test voice data; characteristic is extracted from the test voice data to obtain a test voice characteristic; the test voice characteristic and a registered speaker model are used to estimate characteristic-domain deviation of test voice relative to registered voice and further to obtain a first characteristic-domain deviation; the test voice characteristic is corrected according to the first characteristic-domain deviation, and a first corrected test voice characteristic is obtained; and voiceprint authentication is carried out by utilizing the first corrected test voice characteristic. The method and system can improve the accuracy of voiceprint authentication.

Description

technical field [0001] The invention relates to the technical field of voiceprint authentication, in particular to a voiceprint password authentication method and system. Background technique [0002] Voiceprint password authentication is a technology that automatically identifies and authenticates the speaker's identity based on the voiceprint information of the speaker's physiological and behavioral characteristics reflected in the voice signal input by the user. Compared with other biometric authentication, voiceprint password authentication has the advantages of simplicity, accuracy, economy and good scalability, and has been widely used in security verification control and other fields, such as access control systems, power-on passwords, bank payment passwords, mobile payment And other application scenarios have played an effective role. However, in the actual application of the authentication system, there will be various cross-scenario problems, such as the replaceme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L17/02G10L17/04
Inventor 殷兵方昕魏思胡国平王影胡郁刘庆峰
Owner IFLYTEK CO LTD