Rapid voiceprint authentication method

An authentication method and voiceprint technology, applied in the field of identity recognition, can solve the problems of long comparison time, large time and energy consumption, and weak stability, and achieve fast speed, good stability, and improved efficiency and accuracy. Effect

Inactive Publication Date: 2010-11-17
博石金(北京)信息技术有限公司
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Problems solved by technology

[0018] Among the above three methods, the first two are the most widely used, with long application time and good stability. The disadvantage is that it is difficult to find some stable features, and the comparison time is long, which consumes a lot of time and energy. The third method is just recently. The emerging method is simple to apply and fast in comparison, but its stability is not strong, and it is greatly affected by environmental noise, channel differences, emotions, etc.

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Embodiment Construction

[0045] The fast voiceprint authentication method proposed by the present invention first finds out multiple sets of the same vocabulary in the sample voice file as in the sampled voice file, and extracts the voice data corresponding to these vocabulary; then extracts the voice fragments of the same vocabulary Voiceprint features, such as pitch, formant, cepstrum, etc.; then these feature sequences are calculated to obtain a more stable signal, and finally the sample feature template and statistical threshold are obtained; the corresponding vocabulary in the voice file of the sample is extracted in the same way The voiceprint feature template of the sample; finally, compare the sample voiceprint feature template with the sample voiceprint feature template to get the comparison result.

[0046] The following describes an embodiment of the present invention.

[0047] The judicial voiceprint quick comparison embodiment of the present invention includes searching for the same vocabulary...

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Abstract

The invention belongs to the identity identification technical field, in particular to a method for comparison and authentication through human voiceprint information. The method comprises the following steps of acquiring and processing a voiceprint signal; extracting and processing voiceprint features; establishing a voiceprint model; and finally comparing the voiceprint model. The method of the invention has the advantages of high accuracy rate of comparison results, fast comparison speed and the like; and the method can be widely applied to departments and units requiring voiceprint comparison and authentication such as judicial departments, public security department, banks, national defense departments and the like.

Description

Technical field [0001] The invention is a voiceprint comparison authentication method, which belongs to the technical field of identity recognition. Background technique [0002] Judicial voiceprint comparison technology was first applied in the judicial field by the United States in the middle of the last century. Later, Russia, Japan and other countries began to enter the stage of research and practice. my country started in the early 1990s and is currently entering the stage of practice and development. The current voiceprint comparison authentication methods roughly include the following: 1. Pitch trajectory comparison; 2. Spectrogram (formant) comparison; 3. Statistical methods. [0003] Pitch track diagram comparison method: [0004] (1) Find a lot of the same vocabulary in the samples and inspection materials; [0005] (2) Extract the pitch of the same vocabulary in the sample and inspection material; [0006] (3) Compare the pitch trajectory graph of the same vocabulary in the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L15/02G10L17/00
Inventor 不公告发明人
Owner 博石金(北京)信息技术有限公司
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