X3D Audio Graph for the consistent declarative representation of the W3C Audio API

Modeling of sound propagation is very important for virtual acoustics and virtual reality applications. For that reason, highly advanced computer models for the prediction of sound fields in rooms have already been proposed. However, most of them are complex and require a skilled acoustician to use them effectively. In other words, there is a need for simpler models that are accurate and quick to use, but most importantly should provide a simpler syntax with a hierarchical structure that makes it easy to map user actions to audio parameters. This paper aims to integrating acoustic properties associated with geometric shapes together with 3D spatial sound in the X3D Graphics standard, by exploiting the structure and functionality of Web Audio API, using the audio graph model in order to simplify the development of audio applications. Examples for evaluation lead to useful conclusions and areas for future model development.