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Online teaching highlight extraction method

A technology of highlight clips and clips, applied in speech analysis, instruments, electrical components, etc., can solve problems such as storage waste, and achieve the effect of improving accuracy and matching efficiency.

Inactive Publication Date: 2017-09-12
BEIJING DASHENG ON LINE TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the recorded course media files require a large amount of storage, and the media files themselves contain a lot of redundant information, which wastes storage. To learn again, it is necessary to analyze and extract the highlights of the recorded content of the class, and finally save only the most valuable and exciting class clips

Method used

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Examples

Experimental program
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Embodiment Construction

[0054] The present invention is described in detail below with reference to accompanying drawing and embodiment:

[0055] attached Figure 1-2 It can be seen that a method for extracting highlights from online teaching,

[0056] Construct a speech feature library, set the judging criteria for highlights, and make a speech feature library according to the judging criteria;

[0057] Extract highlights, analyze class media files, and obtain original audio files;

[0058] Preprocess audio files, remove silent information, and obtain multiple audio clips;

[0059] In each audio clip, feature matching is performed on the information of the teacher corresponding to the class in the speech clip library, and if the matching is successful, a record is made;

[0060] According to the dotted records, the audio and video clips of 5s length (the duration can be flexibly set according to requirements) before each dotted record are extracted to form highlights, and these highlights are spl...

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Abstract

The invention relates to an online teaching highlight extraction method, and the method comprises the steps: constructing a voice feature library, setting a highlight criterion, and making a voice feature library according to the criterion; extracting a highlight part, analyzing a lesson media film, and obtaining an audio original file; carrying out the preprocessing of the audio file, eliminating silence information, and obtaining a plurality of audio segments; carrying out the feature matching of each audio segment with the information in a voice segment library corresponding to a lesson: carrying out the marking recording if the matching is successful; extracting an audio segment at a certain length before each marking record according to the marking recording, forming highlight segments, splicing the highlight segments, and forming a final media file. The method provided by the invention achieves the refining of the feature library according to the industry scene of an application, and can effectively improve the accuracy of feature matching. Meanwhile, the method is used for the feature matching of specific objects, so the method also greatly improves the matching efficiency.

Description

technical field [0001] The present invention relates to a kind of data extracting method, specifically, relate to a kind of method for extracting highlights of online teaching. Background technique [0002] In the current online education industry, one-on-one class is one of the important teaching methods. In order to ensure the teaching experience, it is necessary to record the class content for students and parents to review after class. [0003] Because the recorded course media files require a large amount of storage, and the media files themselves contain a lot of redundant information, which wastes storage. To learn again, it is necessary to analyze and extract the highlights of the recorded content of the class, and finally save only the most valuable and exciting class clips. Contents of the invention [0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a method for extracting highlights of online teaching. [0005]...

Claims

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Application Information

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IPC IPC(8): G10L25/24G10L15/02G10L25/78G10L25/51H04N21/439H04N21/44H04N21/8549
CPCG10L15/02G10L25/24G10L25/51G10L25/78H04N21/4394H04N21/44016H04N21/8549
Inventor 白旭辉陈靖
Owner BEIJING DASHENG ON LINE TECH CO LTD
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