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Voiceprint unlocking method integrating content recognition and speaker recognition

A technology of speaker recognition and content recognition, applied in speech recognition, speech analysis, instruments, etc., can solve the problem that voiceprint unlocking has not achieved good results

Inactive Publication Date: 2017-01-18
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the speaker's voice information is highly reproducible and easy to obtain, most voiceprint unlocking has not achieved good results

Method used

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  • Voiceprint unlocking method integrating content recognition and speaker recognition
  • Voiceprint unlocking method integrating content recognition and speaker recognition
  • Voiceprint unlocking method integrating content recognition and speaker recognition

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Embodiment 1

[0236] Below in conjunction with an example the present invention is described in further detail.

[0237] The key speech sample library contains 26 English letters, which are not case-sensitive. The speaker voice sample library contains 5 speaker sample voices. Both the key sample library speech and the speaker sample library speech were recorded in a laboratory environment. Set the system parameters, establish the recognition template of the key voice sample and the recognition template of the speaker voice sample, the system parameter settings are as follows:

[0238] Table 1 Speech modeling parameter settings

[0239]

[0240] According to the parameters set in Table 1, 26 key sample identification templates and 5 speaker identification templates are obtained. Set the current key as asdf, and the system linearly combines key sample a, key sample s, key sample d, key sample f identification template to form the current key identification template.

[0241] After the ...

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Abstract

The invention discloses a voiceprint unlocking method integrating content recognition and speaker recognition. The voiceprint unlocking method comprises the steps of 1, establishing a key speech sample library and a speaker speech sample library, and building a corresponding key sample recognition template and a speaker sample recognition template; 2, setting a key, and combining key samples by a system according to the set key to form a current key recognition template; 3, when unlocking is performed, collecting speech signals through a microphone, performing preprocessing on the input speech signals, and respectively extracting a content recognition characteristic parameter and a speaker recognition characteristic parameter of the speech; and 4, comparing the content recognition characteristic parameter of the input speech with the current key template, comparing the speaker recognition characteristic parameter of the input speech with the speaker sample library template, and performing judgment on whether to authorize unlocking or not by integrating two comparison results. The voiceprint unlocking method disclosed by the invention has high safety performance, and contains the safety of a text key and a physiological key at the same time. In addition, the voiceprint unlocking method is simple in calculation, easy to implement and high in portability.

Description

technical field [0001] The present invention relates to a voiceprint unlocking method, in particular to a composite voiceprint unlocking method combining content recognition and speaker recognition. Background technique [0002] Voiceprint lock is a kind of lock formed by applying voiceprint recognition technology to access control system. Voiceprint unlocking is based on voiceprint recognition technology and is a specific application of voiceprint recognition technology. It has been widely used in Japan and other countries. They unlock the voiceprint in the more critical access control system to achieve privacy protection. [0003] The voiceprint unlocking method is mainly realized based on the voiceprint recognition technology. Voiceprint recognition is mainly divided into speaker recognition and speech recognition. Due to the physiological differences in the speaker's vocal organs and acquired behavioral differences, speaker recognition can be used to determine whether ...

Claims

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Application Information

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IPC IPC(8): G10L17/00G10L17/02G06F21/32G10L15/26G10L15/06G10L17/04
Inventor 郭逾李千目许小强李德强陈晗婧
Owner NANJING UNIV OF SCI & TECH
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