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Voiceprint authentication method and system

A password authentication and voiceprint technology, which is applied in the field of password authentication, can solve the problems of unfavorable voiceprint password authentication system password update, inability to apply user voiceprint password authentication system, etc., and achieve the effect of convenient real-time online generation and frequent changes

Active Publication Date: 2015-07-08
ANHUI IFLYTEK INTELLIGENT SYST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In the prior art, the training of the background model often requires the collection of a large amount of voice data related to the cipher text, which obviously cannot be applied to the user-defined voiceprint password authentication system, and is not conducive to the password update of the voiceprint password authentication system.

Method used

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

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Embodiment Construction

[0072] 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 implementation manners.

[0073] Firstly, the voiceprint password authentication process in the prior art will be briefly introduced below.

[0074] Such as figure 1 Shown is a schematic diagram of the voiceprint password authentication process in the prior art, including the following steps:

[0075] Step 101: receiving a voice signal input by a user;

[0076] Step 102: extracting the voiceprint feature sequence in the voice signal;

[0077] Step 103: performing speech recognition on the speech signal to obtain the cipher text;

[0078] Step 104: Obtain the background model corresponding to the pre-trained ciphertext;

[0079] Step 105: Construct the user's voiceprint password model according to the user's registered voice si...

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Abstract

The invention discloses a voiceprint authentication method and system, and belongs to the technical field of password authentication. The method comprises the steps of receiving a voice signal inputted by a user; recognizing voice of a voice signal to obtain a password text; determining whether a background model is corresponding to the password text; if so, acquiring the background model; if not so, expending a voice generating unit model which is obtained by pre-training according to the password text so as to obtain the background model corresponding the password text; authenticating the user according to the voiceprint feature sequence in the voice signal, the background model and the voiceprint password module of the user. With the adoption of the method and the system, the demand of user on customizing a password and frequently changing the password can be met.

Description

technical field [0001] The invention relates to the technical field of password authentication, in particular to a voiceprint password authentication method and system. Background technique [0002] Voiceprint authentication is a technology that automatically confirms the speaker's identity based on the voiceprint information of the speaker's physiological and behavioral characteristics reflected in the user's input voice signal. Compared with other biometric authentication technologies, voiceprint authentication has many advantages such as simplicity, accuracy, economy and good scalability, and can be widely used in security verification, control and other aspects. [0003] Voiceprint password authentication is a text-dependent (Text-Dependent) voiceprint authentication technology, which requires the user to input voice to determine the password text, and confirm the identity of the speaker according to the characteristics of the voiceprint. In the voiceprint password auth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/32G10L17/04G10L17/02
Inventor 殷兵魏思胡国平胡郁
Owner ANHUI IFLYTEK INTELLIGENT SYST
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