NDLI: A design of 3-dimensional sound field simulator based on acoustic ray tracing and HRTF

Content Provider	IEEE Xplore Digital Library
Author	Onaka, K. Morise, M. Nishiura, T.
Copyright Year	2009
Description	Author affiliation: Graduate School of Science and Engineering, Ritsumeikan University, Japan (Onaka, K.; Morise, M.; Nishiura, T.)
Abstract	With the recent diffusion of multi-channel surround reproduction system for high-realistic sensation, the sound field reproduction system of room acoustics is significantly in demand. In order to simulate the room acoustics, the acoustic ray tracing based on geometric acoustics is one of effective methods. However, it cannot sufficiently simulate the wall materials, because it employs an unique scalar value as the wall impedance. So, we designed the virtual sound field simulator based on acoustic ray tracing and wall impedance acquired by real measurements. With our designed simulator, we could calculate impulse response on arbitrary capturing points in the virtual sound field. But, our former approach cannot sufficiently realize high-realistic sensation, because humans listen to the acoustic signal included in diffraction, transmission and so on causing their head and body. Therefore, it is difficult to reproduce the high-realistic sound field. In this paper, we expand the monophonic simulator to multi-channel output one with our former designed simulator. Specifically, considering transfer functions between the loudspeakers and human ears close to head (Head-Closed Impulse Response: HCIR), we designed the simulator based on acoustic ray tracing and HRTF. And on the monophonic and multi-channel simulator, we confirmed availability of the proposed method by objective evaluation.
Starting Page	233
Ending Page	236
File Size	289005
Page Count	4
File Format	PDF
ISBN	9781424429752
DOI	10.1109/ISCE.2009.5156951
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-25
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ray tracing Biological system modeling Humans Solid modeling Acoustic measurements Impedance measurement Acoustic diffraction Transfer functions Loudspeakers Ear
Content Type	Text
Resource Type	Article

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