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http://dx.doi.org/10.15701/kcgs.2018.24.5.21

Adaptive depth control algorithm for sound tracing  

Kim, Eunjae (Department of Computer Engineering, Sejong University)
Yun, Juwon (Department of Computer Engineering, Sejong University)
Chung, Woonam (Department of Computer Engineering, Sejong University)
Kim, Youngsik (Department of Game & Multimedia Engineering, Korea Polytechnic University)
Park, Woo-Chan (Department of Computer Engineering, Sejong University)
Publication Information
Journal of the Korea Computer Graphics Society / v.24, no.5, 2018 , pp. 21-30 More about this Journal
Abstract
In this paper, we use Sound-tracing, a 3D sound technology based on ray-tracing that uses geometric method as auditory technology to enhance realism. The Sound-tracing is costly in the sound propagation stage. In order to reduce the sound propagation cost, we propose a method to calculate the average effective frame number of previous frames using the frame coherence property and to adjust the depth according to the space based on the calculated number. Experimental results show that the path loss rate is 0.72% and the traversal & Intersection test calculation amount is decreased by 85.13% and the frame rate is increased by 4.48% when the sound source is indoors, compared with the result of the case without depth control. When the sound source was outdoors, the path loss was 0% and the traversal & Intersection test calculation amount is decreased by 25.01% and the frame rate increased by 7.85%. This allowed the rendering performance to be increased while minimizing the path loss rate.
Keywords
sound rendering; sound tracing; virtual reality; ray tracing;
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