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Audio-only educational game virtual acoustic positioning

Author: SunQing
Tutor: MaQingYu
School: Nanjing Normal University
Course: Educational Technology
Keywords: audio-only education game Virtual sound source localization Data voice technology PCA compression and reconstruction K-means clustering Personalized HRTF Virtual sound headset retransmission
CLC: G434
Type: Master's thesis
Year: 2011
Downloads: 33
Quote: 1
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Abstract


With the development of computer technology , education, games to play its positive role in the teaching process gradually can highly stimulate students ' motivation to learn and improve the students ' interest in learning , however, the current educational games are almost always based on the vision of the game , so that visually impaired groups excluded . In order to visually impaired people can enjoy the fun educational games , some research groups to develop educational game based entirely on audio-only hearing , but the related technology is not yet mature , the game itself is not the general public widely known . Audio-only game the most critical is the virtual sound source of accurate positioning and navigation in the game all operations are required to correct navigation depends on the sound , so the focus of this study is that the virtual sound source positioning theory and its application in the audio- the only game in the method of implementation and positioning effect . The contents of this article include: 1 . Explore the human ear sound source localization theory , including : ITD , TLD , auricle effect on the positioning of the human ear , HRTF ( head-related transfer function ) the importance of the human ear positioning role . 2 describes the creation of virtual environments in the audio-only game , including the most critical data in the creation process sound and interactive technology , elaborate design method set of data voice and interactive process . 3. The virtual sound retransmitted pan distortion problems , analysis HRTF personalized matching using several methods to test and compare the effect of improving the auditory localization of each method . Cause for the HRTF data storage capacity and high computational complexity and thus affect the game 's real-time analysis PCA method of compression and reconstruction effects , and explore azimuth compression based on the K-means method based on PCA compression its linear interpolation reduction effect . 5. Retransmission based on the Matlab platform virtual static scenes multiple sound sources headphones and positioning , and to test the effect of the virtual sound source localization .

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