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Method and system for mobile device voiceprint registration and authentication

A mobile device, voiceprint technology, applied in transmission systems, electrical components, voice analysis, etc., can solve problems such as inability to protect user privacy, difficult to guarantee real-time performance, and reduced user experience, so as to increase a good experience and ensure user experience. and normal use, the effect of reducing computing time

Active Publication Date: 2018-04-27
SHANGHAI GUOKE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The inventor found in the process of realizing the present invention that: the disadvantage of this method is that it needs to connect to the network every time, which is not suitable for scenarios where there is no network connection or the user does not want to connect to the Internet, and it cannot protect the privacy of the user. However, if the mobile phone , e-books, tablet computers and other mobile devices to realize offline voiceprint authentication, it will bring the problem that the real-time performance is difficult to guarantee due to the high complexity of the algorithm, the large amount of calculation, and the long calculation time, resulting in the reduction of user experience. Poor sex

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  • Method and system for mobile device voiceprint registration and authentication
  • Method and system for mobile device voiceprint registration and authentication

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Embodiment 1

[0085] see figure 1 , is a flow chart of a method in Embodiment 1 of the present invention. This embodiment provides a mobile device voiceprint registration method, the method comprising:

[0086] S101: Process the voice into frames, perform frequency spectrum analysis, and perform auditory perception filtering in order to obtain voiceprint feature data. To realize the application of voiceprint encryption on mobile devices such as mobile phones, the first and most important thing is to register the voiceprint. Voiceprint registration needs to obtain voiceprint feature data first, and the basic process is as follows: First, the user's recording data is divided into frames, and each frame of voice is calculated for spectrum analysis. When estimating the impact of noise on the voice spectrum, an auditory perception mechanism is introduced. , to estimate the influence of noise on each frame of speech spectrum, and thus to construct the corresponding filter parameters, and finall...

Embodiment 2

[0115] see Figure 4 , is a flow chart of the method in Embodiment 2 of the present invention. This embodiment provides a method for voiceprint authentication of a mobile device. This embodiment corresponds to Embodiment 1. The first three steps of this embodiment are the same as S101~S103 in Embodiment 1. The difference is that in Embodiment 1, after S103 obtains the model statistics of voiceprint, the connected The next step is S104, which is to register the voiceprint; and in this embodiment, after obtaining the model statistics of the voiceprint, the next steps are:

[0116] S105: Compare the model statistics with the stored voiceprint model, and then perform authentication according to the obtained matching degree.

[0117] That is, input a piece of voice, and then compare and match with the registered voiceprint features after extracting the relevant features of the voiceprint through the above method, so as to judge whether it is the voiceprint of the same person and ...

Embodiment 3

[0119] The process of voiceprint registration and authentication will be further described below in combination with the above-mentioned embodiments, and specifically taking a mobile phone with an Android system as an example.

[0120] A common problem with lock screen applications on Android phones is that they cannot be locked. By pressing home or pulling down the status bar, you can skip the lock screen interface and directly enter the system. The screen lock function of application like this is exactly false, does not reach the purpose of screen lock, and the privacy in user's mobile phone is also difficult to be protected. This embodiment allows users to define their own passwords, and the system can also randomly generate a digital password to provide to the user. When the user uses it, he does not need to remember the password, as long as he reads the prompt text at a normal speech rate, the system extracts the password according to the user's voice. The user's voicepri...

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Abstract

The invention discloses a mobile equipment voiceprint registration and authentication method and system. The voiceprint registration method comprises the following steps: processing voices to framing treatment, spectral analysis and auditory perception filtering to obtain voiceprint characteristic data; mapping the voiceprint characteristic data to a quantified data storage list to obtain compressed voiceprint characteristic data; acquiring a corresponding a model statistic quantity according to the compressed voiceprint characteristic data; establishing a voiceprint model according to the voiceprint statistic quantity, and marking and storing to complete voiceprint registration. In the voiceprint registration stage, the voiceprint model is registered according to the model statistic quantity. In the authentication stage, the model statistic quantity is compared with a stored voiceprint model. The method provided by the invention can reduce the calculation amount of the voiceprint model, reduce the storage space of voiceprint characteristics, and resolve the requirement of the mobile equipment for real-time performance of an algorithm, and can improve the use experience and ensure user privacy security without networking for registration and authentication or uploading the user's voiceprint data to a server.

Description

technical field [0001] The invention relates to the field of mobile device encryption, in particular to a method and system for mobile device voiceprint registration and authentication. Background technique [0002] For various mobile devices, such as mobile phones, tablet computers, e-books, etc., when encryption is required, it is generally encrypted through a password, such as password lock screen, inbox encryption, folder encryption, address book encryption, and so on. If the password is leaked or stolen, the mobile phone will be easily unlocked, failing to achieve the original goal of protecting user privacy. In addition, when the user uses a password to unlock, he usually needs to remember the previously set password, which also brings inconvenience to the user. [0003] Voiceprint recognition is a kind of biometric technology, which is a technology to automatically identify the identity of the speaker according to the voice parameters reflecting the speaker's physiol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06G10L17/02G10L21/0232
Inventor 刘青松许星东许敏强
Owner SHANGHAI GUOKE ELECTRONICS
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