Audio Tracing is a hardware-accelerated ray tracing plugin for audio simulation. It integrates real-time ray tracing technology into Unreal Engine’s Sound system to achieve more realistic sound propagation simulation. The plugin physically calculates complex acoustic properties—such as the position, direction, and reflections of sound sources within a real-time, changing game environment—and applies them to the listener, providing a realistic and spatial sound experience. This plugin automatically calculates sound reflections and occlusion via real-time ray tracing, enabling realistic sound variations based solely on the world’s geometry without the need for separate audio occlusion volumes or complex Blueprint logic. Users can apply Audio Tracing to existing sounds with minimal modifications, as it is compatible with Unreal Engine’s existing Sound Asset system, including SoundCues and MetaSounds. Additionally, the Sound Material feature allows for detailed adjustment of the acoustic properties of each surface, enabling users to define the acoustic response of each surface by individually setting scattering coefficients, reflectivity, and absorption coefficients for materials such as wood, glass, and concrete.
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