AES E-Library

Implementation and Visualization of Edge Diffraction with Image-source Method

Traditional image-source method for room acoustic modeling neglects both diffraction and diffusion. In this study the image-source method is evolved to also include edge diffraction as diffractive image sources. Methods to find diffracting edges from a geometric model of a room, and to visualize diffracted image sources are presented. Issues to limit computational complexity and memory usage in image-source method are reviewed and implemented. Diffractive image sources are visualized for two test cases, and impulse responses are calculated and compared with measured ones.

Authors: Pulkki, Ville; Lokki, Tapio; Savioja, Lauri
Affiliations: Helsinki University of Technology, Laboratory of Acoustics and Audio Signal Processing,HUT, Finland ; Helsinki University of Technology, Telecommunications Software and Multimedia Laboratory,HUT, Finland(See document for exact affiliation information.)
AES Convention:112 (April 2002) Paper Number:5603 Import into BibTeX
Subject:Room Acoustics and Sound Reinforcement

Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes19)   /pp2002/pp0205/000192.pdf

Start a discussion about this paper!