Physically Based Sound Synthesis for Large-Scale Virtual Environments

By offering a natural, intuitive interface with the virtual world, auditory display can enhance a user´s experience in a multimodal virtual environment and further improve the user´s sense of presence. However, compared to graphical display, sound synthesis has not been well investigated because of the extremely high computational cost for simulating realistic sounds. The state of the art for sound production in virtual environments is to use recorded sound clips that events in the virtual environment trigger, similar to how recorded animation sequences in the earlier days generated all the character motion in the virtual world. In this article, we describe several techniques for accelerating sound simulation, thereby enabling realistic, physically based sound synthesis for large-scale virtual environments