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Presented is a software system for real‐time simulation of acoustic spaces on consumer graphics technology. This is an API that uses modern graphics processing units (GPUs) to derive the high‐order reflected and transmitted paths to a stereo listener from multiple sound sources within a room of arbitrary geometry and wall properties. The system processes the entire audio chain on the GPU, computing the listener’s stereo mix from raw input waveforms stored in video memory and a polygonal room model and material and scene description. For the intended application which is video game audio, the room acoustics are computed at 15–30 frames/s and interpolated to account for fast listener or source motion to coincide with the graphics rendering, which may be done concurrently on the same processor. Provisions are provided within the API for dynamic rooms to handle gameplay elements such as doors, platforms, and physically modeled objects. An acoustic scene editor is presented, which also uses the API to simulate... |
