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Method and system for dual scoring for text-dependent speaker verification

A text-related, verification method technology, applied in the field of speaker verification, can solve the problem of automatic identity verification engine execution fraud, etc.

Active Publication Date: 2013-12-18
AGENCY FOR SCI TECH & RES
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  • Claims
  • Application Information

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Problems solved by technology

Implementation of automated authentication engines also suffers from real fraud

Method used

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  • Method and system for dual scoring for text-dependent speaker verification
  • Method and system for dual scoring for text-dependent speaker verification
  • Method and system for dual scoring for text-dependent speaker verification

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Embodiment Construction

[0021] The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention. Furthermore, there is no intention to be bound by any theory presented in the background of the invention or the following detailed description. It is an object of the present invention to provide a speaker verification system and method that significantly improves two of the main degradation factors affecting commercial speaker verification engines, namely duration constraints and spoofing attacks.

[0022] Requiring the speaker to utter a specific utterance is one of the constraints whose performance can be easily maintained due to the short utterance time. A large number of text-dependent speaker recognition methods have been proposed to deal with short durations. Text correlation can also help prevent playback fraud by verifying that the speaker who must utter the random prompt text is alive.

[0023] Multilayer ...

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Abstract

The invention provides a method and system for dual scoring for text-dependent speaker verification. Embodiments of systems and methods for speaker verification are provided. In various embodiments, a method includes receiving an utterance from a speaker and determining a text-independent speaker verification score and a text-dependent speaker verification score in response to the utterance. Various embodiments include a system for speaker verification, the system comprising an audio receiving device for receiving an utterance from a speaker and converting the utterance to an utterance signal, and a processor coupled to the audio receiving device for determining speaker verification in response to the utterance signal, wherein the processor determines speaker verification in response to a UBM-independent speaker-normalized score.

Description

[0001] priority claim [0002] This application claims priority from Singapore Patent Application No. 201204003-6 filed on 31 May 2012. technical field [0003] The present invention relates generally to speaker verification, and more particularly to systems and methods for text-dependent speaker verification. Background technique [0004] Speaker verification or speaker authentication (also known as "voice biometry") is a binary classification task that involves accepting or rejecting a speaker's identity request by using distinctive features inherent in his / her voice. Many factors may constrain a speaker verification system. In particular, inter-speaker and intra-speaker variability as well as channel effects severely impact the accuracy of speech verification systems. Furthermore, for the use of ergonomics in real-world applications, duration constraints on enrolling and testing speech material are often required. Unfortunately, current speaker recognition engines, whi...

Claims

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Application Information

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IPC IPC(8): G10L17/08G10L17/20
CPCG10L17/10G10L17/12
Inventor 安东尼·拉尔彻李功益马斌蔡玉翠香
Owner AGENCY FOR SCI TECH & RES
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