Auditory Interface in On-line Meeting for Visually Impaired Users

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研究生：	張哲偉
論文名稱：	Auditory Interface in On-line Meeting for Visually Impaired Users 視障者專用之線上會議語音介面
指導教授：	黃雪玲
口試委員:
學位類別：	碩士 Master
系所名稱：	工學院 - 工業工程與工程管理學系 Department of Industrial Engineering and Engineering Management
論文出版年：	2008
畢業學年度：	96
語文別：	英文
論文頁數：	59
中文關鍵詞：	視覺障礙使用者、語音介面、網路會議、FSM-GOMS
外文關鍵詞：	visually imparied users, auditory interface, on-line meeting, FSM-GOMS
相關次數：	點閱：3 下載：0
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With the development of network and technology, it is common for people to use real-time communication software to interact with friends and send messages in our daily life. The current real-time communication software can support image and voice transmission, and users can join on-line meeting or long-distance learning.
When there are too many participants in an on-line meeting, sighted users have to pay attention to several video frames to find out who is the speaker. However, the visually impaired users encounter difficulties in acquiring information via image transmission, and then some misunderstandings might occur. In this study, recommendation of user interface layout is proposed with analysis of FSM-GOMS in accordance with necessary functions in on-line meeting. And a communication condition for on-line meeting with auditory interface is designed to give visually impaired users indication of speakers’ identification. An experiment was conducted to evaluate how an on-line meeting was affected by the numbers of participants. When the numbers of participants increase, the communication system can provide an audio cue to users.
This study proves that the consideration for designing an accessible interface for visually impaired users is helpful to communication in online meeting. It is expected that the developers of the real-time communication software and online meeting systems can take visually impaired users into account in the future, and let them make good use of the Internet resource.

摘要    I
Abstract    II
誌謝    III
List of Figures    VI
List of Tables    VII
Ch.1    Introduction    1
1    Motivation    1
2    Objectives    2
3    Research framework    3
Ch.2    Literature Review    5
1    Development of accessibility for the visually impaired users    5
1.1 The current situation in using computers for the visually impaired users    5
1.2 The difficulties for the visually impaired in using computers    6
1.3 Interactions between the visually impaired users and computers    7
1.4 The methods and achievements for solving the difficulties    8
1.5 Communication tips for the blind    10
2    The process of passing on audio information    12
2.1 The model of computer-mediated communication    12
2.2 Factors affecting audio information communication process    14
2.3 The methods enhancing the performance    16
3    Analysis and design of auditory interfaces    17
3.1 Advantages of auditory interfaces    17
3.2 Keys to design auditory interfaces    18
3.2 FSM-GOMS    19
Ch.3    Research Method    21
1 Basic structure    21
1.1 Analysis of Co-Life    21
1.2 Analysis of operational requirement    23
1.3 Conversation analysis    24
1.4 System requirements    25
1.5 Main improvements    25
2 Functions and interface design    26
2.1 Original patterns of Co-Life    26
2.2 Application of FSM-GOMS on Co-Life interface design    27
2.3 Specialized interface and functions for the visually impaired users    31
3 Communication of auditory information design    31
3.1 Original communication condition    31
3.2 Improved communication strategies    33
4 Experiment and validation    35
4.1 Experimental tasks    35
4.2 Experimental variables    35
4.3 Subjects    36
4.4 Apparatus    37
4.5 Procedure    37
4.6 Data analysis    38
Ch.4    Results    40
1 Hearing test score    40
2 Number of correct identification    41
3 The analysis of subject evaluation    44
4 Discussion    46
Ch.5    Conclusion    48
1 Contribution of the research    48
2 Limitations of experiments    49
3 Future work    49
References    51
Appendix Ⅰ Information of Subjects    55
Appendix Ⅱ Experimental data    57
Appendix Ⅲ Results of Subjective Evaluation    58
Appendix Ⅳ Wilcoxon Test of Subjective Evaluation    59

                                

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