Acknowledgement
This work was supported by the Electronics and Telecommunications Research Institute (ETRI) grant funded by the Korean government. [22ZH1200, The research of the basic media·contents technologies]
Proceedings of the Korean Society of Broadcast Engineers Conference (한국방송∙미디어공학회:학술대회논문집)
- 2022.11a
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- Pages.26-29
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- 2022
Ambisonic Rendering for Diffuse Sound Field Simulations based on Geometrical Acoustics
기하음향 기반 확산 음장 시뮬레이션을 위한 앰비소닉 렌더링 기법
- Pilsun Eu (Korea Advanced Institute of Science and Technology) ;
- Franz Zotter (University of Music and Performing Arts Graz) ;
- Jae-hyoun Yoo (Electronics and Telecommunications Research Institute) ;
- Jung-Woo Choi (Korea Advanced Institute of Science and Technology)
- Published : 2022.11.18
Abstract
The diffuse sound field plays a crucial role in the perceptual quality of the auralization of virtual scenes. Diffuse Rain is a geometrical scattering model which enables the simulation of diffuse fields that is compatible with acoustic ray tracing, but is often computationally expensive. We develop a novel method that can reduce this cost by rendering the large number of Diffuse Rain data in Ambisonics format. The proposed method is evaluated in a shoebox scene simulation run on MATLAB, in reference to a more faithful method of rendering the Diffuse Rain data ray-by-ray. The EDC and IACC of the binaural output show that the simulated diffuse field can be rendered in Ambisonics with only minimal deviations in energy decay and spatial quality, even with 1st-order Ambisonics.
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