Method and system for evaluating influence of speech speed on voiceprint security

A speech speed and voiceprint technology, applied in the field of evaluation methods and systems for the impact of speech speed on voiceprint security, can solve problems such as the reduction of verification accuracy, and achieve the effect of improving security and usability

Pending Publication Date: 2022-02-11
ZHEJIANG UNIV
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Problems solved by technology

[0003] In practical applications, the accuracy of commercial voiceprint recognition systems is relatively comm

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  • Method and system for evaluating influence of speech speed on voiceprint security
  • Method and system for evaluating influence of speech speed on voiceprint security

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Embodiment Construction

[0033] The technical solution of the present invention will be further described below in conjunction with specific examples. The concept of example embodiments is comprehensively conveyed to those skilled in the art. The features, structures, or characteristics described may be incorporated in one or more embodiments in any suitable manner.

[0034] The flowchart shown in the drawings is merely an exemplary description, and it is not necessary to include all steps. For example, some steps can also be decomposed, and some steps can be merged or partially merged, so the order in which actual execution may change according to the actual situation.

[0035] The present invention studies through the correlation of voiced safety and speech speed, including voice file speed in public speech library by phone chamber positioning and cutting measurement, through voice time domain telescopic technology expansion spectral library to obtain multiple speakers different speech speeds Voice data...

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Abstract

The invention discloses a method and a system for evaluating the influence of a speech speed on voiceprint security. The method comprises the following steps: measuring the speech speed of a speech file in a public corpus through phoneme positioning and segmentation; expanding the corpus through a voice time domain scaling technology to obtain voice data of multiple speakers at different speech speeds; and constructing data sets of different registration speed and test speed, and exploring the influence of voices at different speed on the voiceprint misrecognition rate in a voiceprint recognition process. On the basis, a voiceprint speech speed security scoring algorithm is designed, the speech speed security of voiceprint is quantitatively measured, manufacturers and users are helped to improve the safety and usability of a voiceprint recognition system, and the voiceprint speech speed security scoring algorithm has remarkable research significance and social value.

Description

Technical field [0001] The present invention belongs to the field of sound pattern, involving an assessment method and system of a speech versus sound safety. Background technique [0002] The sound pattern is a biomechanical feature used to distinguish a person's voice in other person's sound, including physiological features such as channel shapes, and behavioral features (e.g., pronunciation). Compared with other biometric identification techniques, the sound is easy to use, and the need for hardware is low and the operating distance length can be widely used for devices. Typically, the voice identification word is the device wake up. Today, most smartphones, smart voice systems, and computer voice assistants have sound pattern recognition systems, and voiced certification has become one of the most commonly used biometric authentication methods in smart devices, public security, and financial transactions. Currently, there is a lack of measurement and research on voiced secur...

Claims

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Application Information

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IPC IPC(8): G10L17/22G10L15/01
CPCG10L17/22G10L15/01
Inventor 徐文渊冀晓宇迮俊宁何睿文程雨诗
Owner ZHEJIANG UNIV
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