This paper describes the continuation of research concerning sound source obstruction in virtual scenes. An algorithm for the determination of sound source obstruction was implemented in the described 3D MPEG-4 Environment. With the help of the MPEG-4 Advanced AudioBIFS node AcousticMaterial acoustic properties are assigned to potential obstructors in a virtual scene. Various implementations of acoustic obstruction are explained. Furthermore, a bimodal subjective assessment was performed in order to identify the best implementation of obstruction. The results of the assessment are presented in-depth. Additionally we demonstrate a concept for a second intended bimodal assessment for the comparison of gain and frequency filtering and give an outlook for further research and development in the area of immersive acoustics.

Authors: Reiter, Ulrich; Steglich, Beatrix
Affiliation: Technische Universität Ilmenau
AES Convention: 120 (May 2006) Paper Number: 6705
Publication Date: May 1, 2006 Import into BibTeX
Subject: Spatial Perception and Processing
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=13509

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