Teaching mode analysis method and system

A pattern analysis and pattern technology, applied in speech analysis, data processing applications, instruments, etc., can solve problems such as inability to guarantee cutting accuracy and economy

Pending Publication Date: 2021-04-02
HUAZHONG NORMAL UNIV
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  • Application Information

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Problems solved by technology

[0008] Aiming at the defects of the prior art, the purpose of the present invention is a teaching mode analysis method and system, which aims to solve the need for comprehensive human judgment of classroom audio i

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  • Teaching mode analysis method and system
  • Teaching mode analysis method and system

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Embodiment Construction

[0068] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0069] The object of the present invention is to carry out discourse and non-discourse detection, cutting and identification to classroom teaching audio based on voice activity detection algorithm (Voice Activity Detection, VAD) and Gaussian mixture-universal background model (GMM-UBM), and the recognition result is classified as Q (Silence), S (Student Discourse), and T (Teacher Discourse) three identities, so as to automatically analyze the classroom teaching mode, and the final results are displayed as teacher discourse, student discourse, and silence pie charts and graphs.

[0070] figure 1 It...

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Abstract

The invention provides a teaching mode analysis method and system, and the method comprises the steps: detecting an activity sound in a classroom audio, and marking the start time and end time of eachsection of activity sound; cutting the teaching audio according to the start time and the end time of each section of activity sound to obtain a plurality of sections of activity audios; based on thecombined Mel cepstrum feature MFCC vector, extracting different speaker features and durations of different speakers in each section of activity audios; based on a pre-trained universal background model UBM, distinguishing different speaker features into teacher speaking and student speaking, and determining corresponding teacher speaking duration and student speaking duration; and according to the proportion of the speaking duration of the teacher in the total classroom duration, judging whether the classroom teaching mode is a practice-type classroom, a teaching-type classroom or a mixed-type classroom. Interactive utterance data of teachers and students in class are extracted from class audios by adopting an artificial intelligence technology, and teaching modes of the teachers in class are analyzed.

Description

technical field [0001] The invention belongs to the field of combination of teaching activities and artificial intelligence, and more specifically relates to a teaching mode analysis method and system. Background technique [0002] With the rapid development of education informatization, the integration of teaching activities and artificial intelligence technology is getting closer and closer, but the teaching evaluation link is still in the traditional stage of manual labeling and statistics, lacking intelligent strategies, convenience, effectiveness and objectivity. Real-time teaching model analysis can help teachers to reflect on teaching behavior and teaching methods in a timely manner, summarize and correct problems and deficiencies in the teaching process, and implement in-depth, direct and effective teaching activities, which is conducive to the development of teachers' professionalism, and then improves teaching. quality. In the era of education informatization, the...

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Application Information

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IPC IPC(8): G10L17/00G10L17/02G10L17/04G10L25/24G10L25/51G06Q50/20
CPCG10L17/02G10L17/04G10L25/24G10L25/51G06Q50/205
Inventor 刘三女牙陈增照陈荣易宝林戴志诚郑秋雨张婧王梦珂
Owner HUAZHONG NORMAL UNIV
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