In order to use spatial audio in virtual 3D spaces, such as video games, it is important to take into account the positions of the sound sources and listener. Particularly, for object-based audio, acoustic features must be applied to each source individually. At this time, processing unnecessary sources wastes CPU resources. This paper proposes low cost methods for determining the sound propagation paths using layered quadtree grids and enabling sound designers to design more realistic sounds by using audio buses and sound effects. By focusing on space and openings, it shows how to dynamically reduce processing for unnecessary sources and determine propagation paths. Experiments show this method processes each source more than twenty times faster than the conventional method.

Authors: Kojima, Kenji; Kitagawa, Takahiro
Affiliation: Capcom Co.., Ltd., Osaka, Japan
AES Conference: 2018 AES International Conference on Spatial Reproduction - Aesthetics and Science (July 2018)
Paper Number: P5-2
Publication Date: July 30, 2018 Import into BibTeX
Session Subject: Spatial Audio; Sound Propagation; Video Games; Layered Quadtree Grids (LQG); Clustering
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=19616

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:   /conf/2018/spatial/spatial_reproduction_2018_paper_21.pdf

Start a discussion about this paper!