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研究生:莊介棠
研究生(外文):Chuang Chien-Tang
論文名稱:聲音虛擬實境於聽覺影像顯示系統之研究
論文名稱(外文):The Study on Sound Virtual Reality for Hearing Image Display System
指導教授:蕭肇殷
指導教授(外文):Chiou Chao-Yin
學位類別:碩士
校院名稱:逢甲大學
系所名稱:機械工程學系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2001
畢業學年度:89
語文別:中文
論文頁數:61
中文關鍵詞:視障者輔助工具聽覺影像顯示
外文關鍵詞:the auxiliary tools for blind peopleHearing image display
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本文提出一聽覺影像顯示系統之視障者輔助工具,此系統讓視覺不正常的人可以感知周遭物體之三維影像輪廓。
傳統之視障輔具大多採用語音、點字或陣列式觸覺顯示器,這些技術給弱視者一個新的感知能力,但就目前研究中此類顯示器僅侷限於平面影像而尚未處理三維空間的立體影像。有鑑於此,本文提出一具有立體顯影、特徵顯示及顯示慢速度移動之動態功能的聽覺影像顯示器,此系統引用聲音虛擬實境由模糊邏輯控制器控制喇叭增益及二者時間差,並且與觸碰比對偵測做整合使其以觸覺輔助聽覺感知達成三維影像顯示。
本文將規劃法則透過模擬以印證其顯示技術的可能性,並分析可能遇到的問題及未來發展方向。
In this paper, some techniques of a hearing image display system are proposed. Those are for blind people to percept the image contours of some objects.
Most of the developed blind guide systems adopt pronunciation, braille, or tactile array display subsystems to enhance the percept capability of the users. Usually, those systems can not display 3D images. For this purpose, some techniques for displaying 3D image contours are studied. Basing on the concept of sound virtual reality, this system adopts the fuzzy logic controller to control the gains and the time difference of loudspeakers to mimick and display the sound source image contours of some objects. For improving the resolution, the ad hoc methods of combining the collision detection method and tactile aided display techniques are also studied.
Some rules and algorithms of the sound aided image display techniques are presented to demonstrate the feasibility of this approach and to find the possible problems for future study.
中文摘要......................................I
英文摘要......................................II
目錄..........................................III
圖目錄........................................V
表目錄........................................VII
第1章 緒論....................................1
1.1研究動機...................................1
1.2文獻回顧...................................2
1.3發展現況及研究方法.........................3
1.4本文結構...................................5
第2章 理論探討................................6
2.1耳朵的結構與聽覺機制.......................6
2.1.1耳朵的構.................................6
2.1.2視覺與聽覺系統的比較.....................8
2.1.3聲源定位.................................9
2.2聲學基本理論...............................11
2.2.1聲波的特性...............................11
2.2.2等效聲音.................................13
2.2.3聲源模型.................................16
2.3模糊控制理論...............................22
2.3.1模糊集合.................................22
2.3.2模糊邏輯控制器...........................23
第3章 影像顯示系統............................29
3.1前言.......................................29
3.1.1觸碰比對技術.............................29
3.1.2聲源影像顯示技術.........................30
3.1.3聲音虛擬實境技術.........................30
3.2系統架構...................................31
3.3控制系統設計...............................35
3.4電腦模擬...................................40
3.5觸碰偵測...................................48
3.5.1方塊分割法...............................48
第4章 討論....................................53
第5章 結論與期望..............................55
參考文獻......................................56
附錄..........................................59
致謝..........................................61
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