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Concatenated speech detection system and method

A speech detection and speech technology, applied in speech analysis, speech recognition, instruments, etc., can solve problems such as difficult detection, poor system security, and not necessarily reliable results, and achieve good detection results and high accuracy.

Inactive Publication Date: 2012-05-16
SHENGLE INFORMATION TECH SHANGHAI
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AI Technical Summary

Problems solved by technology

If the user's pronunciation of each word changes quickly, these voices are segmented and spliced, and some characteristics of the spliced ​​voice (such as energy changes) can be analyzed to detect whether the voice is spliced ​​or natural, but the result is not necessarily the same. Reliable; if the user's pronunciation of each word is slow, the existing methods are difficult to detect if these voices are segmented and then spliced. In addition, the spliced ​​voice may also have some distortions. difficult to detect
In this way, hackers can successfully log in to the user's system by pretending to be the user through spliced ​​voice, thereby harming the user's interests and poor system security.

Method used

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  • Concatenated speech detection system and method
  • Concatenated speech detection system and method
  • Concatenated speech detection system and method

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Embodiment Construction

[0027] An embodiment of the splicing speech detection system of the present invention is as follows: figure 1 As shown, it includes a user login module, a voice comparison module, and a voiceprint recognition module;

[0028] The user login module is used to receive user login request information, after receiving the user login request information, output a section of text to the user for the user to read aloud, and output the section of text to the voiceprint recognition module, the section of text Contains N identical characters in , 2≤N, the identical characters contained in the said piece of text can be fixed, such as the character "6", or randomly generated; the number of identical characters It can be fixed, such as all 3, or random, such as 2 to 5; the position where the same character appears in the piece of text can be fixed, such as the number of the same character is 3 1, respectively in the first, third and sixth digits in the said paragraph of text, which may als...

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Abstract

The invention discloses a concatenated speech detection system, which comprises a user login module and a speech comparison module. When user login request information is received, the user login module outputs a text to a user, wherein the text contains N same characters and N is less than or equal to 2; the speech comparison module conducts detection and comparison to a speech given by the user and outputs a concatenated speech recognition signal; and if segments with the same pronunciation are detected in the speech given by the user, the output concatenated speech recognition signal is yes, otherwise, the output concatenated speech recognition signal is no. The invention additionally discloses a concatenated speech detection method. By using the system and the method, concatenated speeches can be accurately detected.

Description

technical field [0001] The invention relates to speech recognition technology, in particular to a splicing speech detection system and method. Background technique [0002] 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 physiological and behavioral characteristics in the voice waveform. Voiceprint recognition uses the speaker information in the voice signal, regardless of the meaning of the words in the voice, and it emphasizes the personality of the speaker. [0003] A common voiceprint authentication system usually generates some fixed or random text and asks the user to speak it to identify its voiceprint. However, if the user's system is installed with some hacking tools that record the user's previous login voice, the user's previous login voice can be segmented and spliced ​​according to the text generated by the voiceprint ...

Claims

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Application Information

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IPC IPC(8): G10L15/04G10L15/00
Inventor 张峰黄伟
Owner SHENGLE INFORMATION TECH SHANGHAI
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