在线教学平台中视频语音识别系统设计

摘要

在线协同学习平台中,为方便用户更加快捷地查找网络中的多媒体文件,完成基于教学视频内容信息检索,视频语音识别是重要环节。教学视频语音识别系统是基于隐马尔可夫模型下语音识别的一个实例,旨在实现教学音/视频文件中文字提取的功能,具有重要的应用价值。文中对语音识别系统的应用软件进行了需求分析,通过其相关功能的性能测试结果表明,该系统实现并展示了将视频中的音频信息文字转换的过程。%On the online collaborative learning platform,speech recognition of videos is crucial to facilitate users in faster searching and choosing multimedia files in a network and completed the information retrieval operation in teaching videos.The teaching video speech recognition system in the paper,which is an application case of hidden Markov model in extracting texts from audio or video teaching files,has important application value.This paper makes a requirement analysis of applied software for speech recognition,and tests the performance of some related functions.The results show that the designed system can realize and display the conversion of audio information in video into texts.