语音合成技术在听力考试系统设计中的应用

Applycation of Speech Synthesis Technology in The Design of Listening Test System

在听力类考试系统中,听力题库的建设处于重要的地位。目前,绝大部分考试系统的听力题目都以音频文件的形式存储于磁盘或数据库中,不但占用大量空间,考试时也会占用大量的带宽。语音合成技术是文本转换成语音的技术。考试前,把每一个听力题目转换为文本形式保存在磁盘或数据库中,需要语音播放时调用语音合成引擎转换为语音。这种方式可以大大减少存储空间及传输带宽,降低考试题目的缓冲时间。同时,文本形式易于修改,增加了听力考试的灵活性。本文介绍了语音合成技术及在考试系统中的应用方式,并给出了关键的代码。

In the listening test system,the construction of listening question bank is in an important position.At present,most of the listening questions of the examination system are stored in disk or database in the form of audio files.In addition to occupying a lot of space,it will also occupy a lot of bandwidth during the examination.Speech synthesis technology is the technology of converting text into speech.For each listening topic,it can be converted into text and saved in disk or database.When speech playback is needed,it can call the speech synthesis engine to convert it into speech.This method can greatly reduce the storage space and transmission bandwidth,and reduce the buffer time of examination questions.At the same time,the text form is easy to modify,which increases the flexibility of listening test.This paper introduces the speech synthesis technology and its application in the examination system,and gives the key code.