Voiceprint model updating method and system

A model update and voiceprint technology, which is applied in speech analysis, instruments, etc., can solve the problem that the voiceprint model deviates from the target speaker's voiceprint model, and achieve the effect of ensuring correctness

Active Publication Date: 2016-11-23
ANHUI IFLYTEK INTELLIGENT SYST
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AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method and system for updating a voiceprint model to solve the problem of the updated voiceprint caused by false speakers whose voiceprint features are similar to the target speaker in the prior art. The problem that the model deviates from the actual voiceprint model of the target speaker

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  • Voiceprint model updating method and system
  • Voiceprint model updating method and system

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Embodiment Construction

[0059] 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.

[0060]The present invention is different from the prior art: the voice data of all users who have successfully authenticated are added to the training data of the original voiceprint model as model update data, resulting in the voice data of the impostor being included in the update data, and the voiceprint model of the target speaker is updated. , making it deviate from the target speaker's voiceprint characteristics. The present invention divides the current login time of the target speaker and the last update time of the voiceprint model of the target speaker into multiple time clusters, and selects the successfully authenticated voice data in each time cluster as the update of the voiceprint model of the targ...

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Abstract

The invention discloses a voiceprint model updating method and system. The method comprises that present login time of a target speaker and last update time of a voiceprint model of the target speaker are obtained; a time period between the last update time of the voiceprint model of the target speaker and the present login time of the target speaker is divided into time clusters; voice data of the target speaker, which is obtained when voice authentication succeeds, in each time cluster is acquired; voice data is selected form voice data which is obtained when authentication succeeds in each time cluster and serves as update data for the voiceprint model of the target speaker; a voiceprint model is retrained by utilizing the update data for the voice model of the target speaker and training data of an original voiceprint model, and a trained new voiceprint model is obtained; and the new voiceprint model is used to update the voiceprint model of the target speaker. According to the invention, a pretender is prevented from updating the voice model of the target speaker continuously in a very short time, and it is ensured that the voiceprint model of the target speaker is updated correctly.

Description

technical field [0001] The invention relates to the technical field of voiceprint recognition, in particular to a method and system for updating a voiceprint model. Background technique [0002] The voiceprint feature is one of the important biological characteristics of the human body. It is not only specific, but also relatively stable. It is often used in voiceprint recognition, voiceprint authentication and other fields. [0003] The method of identity authentication through voiceprint features is usually to represent different individuals by establishing a voiceprint model, and then use the voiceprint model to identify different individuals. In general, when training the voiceprint model, very little training data is obtained, and the accuracy and adaptability of the trained voiceprint model are poor. Therefore, in order to increase the practicability of the voiceprint model, it is necessary to continuously update the voiceprint model in the later stage to increase its...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L17/04G10L17/08
Inventor 方昕何俊刘俊华魏思胡国平王影胡郁刘庆峰
Owner ANHUI IFLYTEK INTELLIGENT SYST
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