在人與人的溝通中，語言的表達是最直接和快速的方法。一般人要將心中想要表達的意思透過語言來表示是非常容易的。但是中重度語障人士往往無法用自身語音與外界溝通，通常他們需要用其他的方法與外界聯繫。因此，如何幫助語障人士利用其有限的語音與他人溝通，製作一個可以幫助他們去學習發音的工具，讓一般人更容易了解他們要表達的意思，就成為我們要努力去研究和製作的。

為了改善語障者的發音，在製作上我們是採用語音的頻譜分析技術為主。藉由此技術來分析語障人士語音訊號，使訊號之頻譜分佈顯示在液晶螢幕上，利用使用者的語音資訊來辨斷，給予一定的回饋，幫助使用者循序漸進的改善其發音。為了方便使用者能隨時隨地的練習，我們製作成一個可攜帶式發音訓練器。

For human communication, speaking is the most direct and fastest way. It's easy for human beings to express what they think by language. But, persons with speech disabilities usually can't communicate with the normal persons by their voice. So, how to help speech-handicapped people utilize limited voice to communicate with others and to make up tools that can assist them in learning pronunciation for other people realize what they want to express easily, it becomes our made efforts to study and implement the assistive tools.
In order to improve the pronunciation of persons with speech disabilities, we mainly adopt voice-spectrum analytic technology to analyze voice signal of a person with speech disabilities and show the spectrum distribution on the liquid crystal display (LCD) panel. Making a judgment through user's voice information, we can give some feedback to help users improve their pronunciation step by step. In order to enable users practicing anytime and anywhere, we implemented a portable educated machine of pronunciation.

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