The Development of a Student-Led CALL System Which Enables Pronouncing Correction through Visual Symbols

本文介绍了一种以学生为主导的计算机辅助教学系统的研究与开发。该系统以计算机辅助教学为基础，在教育网站上牢固地建立起来，作为一个独立的学习辅助系统，具有良好的可操作性，能够进行发音纠正教学。所开发的计算机辅助教学系统具有以下特点：1.以视觉信息补充音频信息：视觉表达是一种可以被捕捉为图像的、具有良好记忆力的表达。学生反复训练说、听信息，第三方(老师)对训练结果进行评估，将学生的语音数据加到视觉符号(音调符号)上，将评估结果反馈给学生。这一过程使学生能够直观地领会客观发音评价，加深理解。学生主导型：对于传统的LL设备，教师通过切换操作直接连接到学生，并听取和评估学生的发音。这会导致学生因为老师的打断或对学生不能接受的发音进行评估而感到焦虑或不满。这种系统可以被认为是一种学生反复训练和理解发音，然后要求教师进行评估以消除学习焦虑的系统。不分时间和空间的学习和纠错教学：学生有意传递的语音数据一次存入数据库。教师可以对语音数据进行校正，也可以在课外时间对学生进行教学，学生可以随时从数据库中看到评估结果。然后，将学生发送的语音数据和评估结果融为一体，呈现给学生，无论时间流逝，都能记住，并再现当时的学校情况。

This reports relates to the research and development of a student-led CALL system which is based upon the CAI (Computer Assisted Instruction) being firmly established in an educational site as an individual learning assisted system, has excellent operability, and enables pronouncing correction teaching.The developed CALL system has the following features ;1. A supplementation of audio information with visual information :Visual expression is one whose can be caught as an image and which has excellent memory. The student repetitively trains speaking and hearing information, the third party (teacher) evaluates the training result, and the evaluation result is fed back to the student by adding the voice data of the student to a visual symbol (tone symbol). This process enables the student to visually catch on objective pronouncing evaluation and deepen his understanding.2. Student-led type :For the conventional LL equipment, the teacher directly connects to students through switching operation and hears and evaluates the pronunciation of the student. This causes the student to be anxious or dissatisfied due to the interruption of the teacher, or the evaluation of an unacceptable pronunciation of the student.This system can be considered as a system where the student repetitively trains and understands the pronunciation, and thereafter requests the evaluation to the teacher to eliminate a learning anxiety.3. Learning and corrective teaching regardless of time and space :The voice data transmitted by the intention of the student is once stored into data-base. The teacher can correct the voice data and teach the student also out of school hours and the student can see the evaluation result from the data-base at any time. Then, the voice data transmitted by the student and the evaluation result are incorporated to a unity and presented to the student who can remember, regardless of an elapse of time, and reproduce the school situation at that time.