Method and system for improving oral evaluation performance

A performance and spoken language technology, applied in speech analysis, speech recognition, instruments, etc., can solve a large number of problems, such as the limitation of teaching time and space for teachers and students, and the inability to guarantee the uniformity of scoring standards, so as to improve the effect of speech recognition and improve the accuracy. Effect

Active Publication Date: 2014-02-19
IFLYTEK CO LTD
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Problems solved by technology

The traditional artificial oral English assessment method greatly limits the teaching time and space for teachers and students, and there are also many hardware gaps and imbalances in terms of teaching staff, teaching venues, and expenditures; manual assessment cannot avoid evaluators Due to individual de

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  • Method and system for improving oral evaluation performance
  • Method and system for improving oral evaluation performance
  • Method and system for improving oral evaluation performance

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Embodiment Construction

[0066] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0067] First, a brief description will be given below of the oral language evaluation method for semi-open questions in the prior art. Such as figure 1 Shown is a schematic diagram of the evaluation method for semi-open questions in the prior art.

[0068] The evaluation method includes the following steps:

[0069] Step 1: receiving user voice signal input, that is, examinee voice input.

[0070] Step 2: feature extraction of the speech signal, which may further include noise reduction preprocessing of the speech signal, etc.

[0071] The voice signal feature refers to a vector that can characterize the user's pronunciation characteristics, and usually can extract 39-dimensional MFCC (Mel Frequency Cepstrum ...

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Abstract

The invention discloses a method and system for improving the oral evaluation performance. The method comprises the steps that speech data, to be evaluated, of a user are received, wherein the speech data comprise the speech data of reading questions and the speech data of semi-open-ended questions; grading is conducted on the reading questions according to the speech data of the reading questions; self-adaption effective data are obtained from a grading result; according to the self-adaption effective data, a preset acoustic model is optimized; the semi-open-ended questions are evaluated through the optimized acoustic model. By the adoption of the method and system for improving the oral evaluation performance, the accuracy of oral evaluation is effectively improved.

Description

technical field [0001] The invention relates to the technical field of speech signal processing, in particular to a method and system for improving spoken language evaluation performance. Background technique [0002] As an important medium of interpersonal communication, spoken language plays an extremely important role in real life. With the continuous development of social economy and the intensification of globalization, people have put forward higher and higher requirements for the efficiency of language learning and the objectivity, fairness and scale of test of language assessment. The traditional artificial oral English assessment method greatly limits the teaching time and space for teachers and students, and there are also many hardware gaps and imbalances in terms of teaching staff, teaching venues, and expenditures; manual assessment cannot avoid evaluators Due to individual deviations, the uniformity of the scoring standards cannot be guaranteed, and sometimes ...

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Application Information

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IPC IPC(8): G10L15/26G10L25/03G10L25/48
Inventor 高前勇魏思胡国平刘丹陈进胡郁
Owner IFLYTEK CO LTD
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