根據第二語言習得的研究上，學習者往往在學習第二語言的時候，習慣使用第一語言來模擬
第二語言的發音，此時由第一語言來模擬第二語言時所發生的障礙，稱為發音障礙。本論文以英
美人士為例，提出一種華語發音障礙偵測系統。此系統可針對英美人士學習華語時，容易造成發
生發音障礙的地方，進行語音偵測與分析，提供給學習者在學習時的一種幫助，讓學習者在學習
第二語言的過程中，能更具有\"道地的發音\"。

According to the studies about the second language learning, learners tend to use his first language to emulate the pronunciation of the second language. The language pronunciation problem caused by using the
first language is regarded as “pronunciation obstacle.” In this paper, the pronunciation obstacle of British and American to the study of Mandarin is explored. Based on the corpus, we will propose a pronunciation obstacle identification system on learning Mandarin. This system will be useful for learners to have more native
pronunciation based on the information provided by this system.