In this study we investigate methods for sound propagation in virtual complex architectural environments for spatialized audio rendering to use in immersive virtual reality (VR) scenarios. During the last few decades, sound propagation models have been designed and investigated for complex building structures using geometrical approach (GA) and hybrid techniques. For sound propagation, it is required to design fast simulation tools to incorporate a sufficient number of dynamically moving sound sources, room acoustical properties, and reflections and diffraction from interactively changing surface elements in VR environments. Using physically based models, we achieved a reasonable trade-off between sound quality and system performance. Furthermore, we describe the sound rendering pipeline into a virtual scene to simulate virtual environment.
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