Re: [Algorithms] Spherical harmonics for room acoustic modelling
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From: Veikko E. <vei...@ik...> - 2010-07-17 21:13:29
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From: Oscar Forth <os...@tr...> > Spherical harmonics for room acoustic modelling > [...] Not exactly directly related to the original question, but to feed the discussion and curious minds regarding sound waves also in games, I thought to share that Intel just recently published a paper on this. Interactive Geometric Sound Propagation and Rendering by Micah Taylor, Anish Chandak, Lakulish Antani, Dinesh Manocha available at http://software.intel.com/en-us/articles/interactive-geometric-sound-propagation-and-rendering/ " *Abstract* We describe a novel algorithm and system for sound propagation and rendering in virtual environments and media applications. Our approach uses geometric propagation techniques for fast computation of propagation paths from a source to a listener and takes into account specular reflections, diffuse reflections, and edge diffraction. In order to perform fast path computation, we use a unified ray-based representation to efficiently trace discrete rays as well as volumetric ray-frusta. Furthermore, our propagation algorithm scales well with the number of cores, and uses interactive audio rendering technique to generate spatialized audio signals. The overall approach can render sound in dynamic scenes, allowing source, listener, and obstacle motion, and we show its performance on game-like and architectural environments. To the best of our knowledge, this is the first interactive sound rendering system that can perform plausible sound propagation and rendering in dynamic virtual environments. " Cheers, Veikko Eeva |