Method and device for feature extraction for voice replay detection

A feature extraction and speech technology, applied in speech analysis, instruments, etc., can solve problems such as inability to extract features, reduce identity verification performance, and inability to correctly recognize speech content, and achieve the effect of accurate feature extraction and improved accuracy.

Active Publication Date: 2018-08-03
BEIJING D EAR TECH
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Problems solved by technology

[0007] The method of voice playback detection by establishing a speaker channel model is limited by the speaker and a specific channel, and cannot obtain a good voice playback detection effect in the case of unknown user identity or channel, and the application is not universal
Speech recognition technology is used for voice playback detection. When the user to be recognized has a serious accent or has his own special pronunciation habits, the speech recognition system may not be able to correctly recognize the voice content of the user to be recognized, and cannot perform more effective feature extraction. Reduced performance of authentication

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  • Method and device for feature extraction for voice replay detection
  • Method and device for feature extraction for voice replay detection
  • Method and device for feature extraction for voice replay detection

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[0042]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making ...

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Abstract

The present invention provides a method and a device for feature extraction for voice replay detection. The method comprises the steps of: performing 1.5 dimension spectrum estimation of obtained voice signals, and obtaining 1.5 dimension spectrum features of the voice signals; employing a warping function to perform subsection normalization of an energy distribution function of a frequency domainspace of the voice signals, and obtaining energy distribution features of the voice signals after normalization; and performing fusion of 1.5 dimension spectrum features of the voice signals and energy distribution features after normalization, and obtaining 1.5-SFED (1.5 Spectrum Fuse Energy Distribution). The method and the device for feature extraction for voice replay detection can improve the accuracy of voice replay detection.

Description

technical field [0001] The invention relates to the technical field of computer information services, in particular to a feature extraction method and device for voice playback detection. Background technique [0002] Speaker recognition technology, also known as voiceprint recognition technology, is mainly based on the information of the speaker's personality characteristics contained in the voice, using computers and various information recognition technologies to automatically realize the confirmation of the speaker's identity. [0003] In recent years, with the rapid development of the Internet, voice as a non-contact information carrier, people can rely on various mobile terminal devices, such as mobile phones, microphones and IP phones, to complete voice collection anytime and anywhere, and transmit it through the network and background services to realize human-computer interaction and speaker recognition. [0004] While the Internet gives people convenience and spee...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L17/02G10L25/18G10L25/78
CPCG10L17/02G10L25/18G10L25/78
Inventor 郑方李通旭邬晓钧
Owner BEIJING D EAR TECH
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