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Rendering of Advanced 3D Room Models by Enhanced Application Programming Interfaces

The geometrical and perceptual room models for 3D audio production and rendering, proposed by notable tools and more recently supported by the MPEG-4 standard, are compact and satisfactory description schemes for a wide range of audio and multimedia applications. Support of both approaches at the same time is a challenging task, especially when the requirements are high quality, precise synchronization with other media and acceptable latency to user interaction, as it often happens in standardized contexts for media integration. In this paper we present first the results from several experiences with different Application Programming Interfaces and hardware platforms; suitable extensions to support physical and perceptual models are then described and their integration into an MPEG-4 compliant player is presented.

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