NDLI: Progressive perceptual audio rendering of complex scenes

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Progressive perceptual audio rendering of complex scenes

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Progressive perceptual audio rendering of complex scenes

Content Provider	ACM Digital Library
Author	Tsingos, Nicolas Drettakis, George Moeck, Thomas Bonneel, Nicolas Viaud-Delmon, Isabelle Alloza, David
Abstract	Despite recent advances, including sound source clustering and perceptual auditory masking, high quality rendering of complex virtual scenes with thousands of sound sources remains a challenge. Two major bottlenecks appear as the scene complexity increases: the cost of clustering itself, and the cost of pre-mixing source signals within each cluster. In this paper, we first propose an improved hierarchical clustering algorithm that remains efficient for large numbers of sources and clusters while providing progressive refinement capabilities. We then present a lossy pre-mixing method based on a progressive representation of the input audio signals and the perceptual importance of each sound source. Our quality evaluation user tests indicate that the recently introduced audio saliency map is inappropriate for this task. Consequently we propose a "pinnacle", loudness-based metric, which gives the best results for a variety of target computing budgets. We also performed a perceptual pilot study which indicates that in audio-visual environments, it is better to allocate more clusters to visible sound sources. We propose a new clustering metric using this result. As a result of these three solutions, our system can provide high quality rendering of thousands of 3D-sound sources on a "gamer-style" PC.
Starting Page	189
Ending Page	196
Page Count	8
File Format	PDF
ISBN	9781595936288
DOI	10.1145/1230100.1230133
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2007-04-30
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Auditory masking Ventriloquism Clustering Audio rendering
Content Type	Text
Resource Type	Article

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