Technical Papers

Sound & Light

Monday, 11 August 9:00 AM - 10:30 AM | Vancouver Convention Centre, East Building, Ballroom A Session Chair: Christopher Batty, University of Waterloo

Parametric Wave Field Coding for Precomputed Sound Propagation

A fast and memory-efficient environmental sound-propagation technique that combines precomputed wave simulation with a novel parametric approach to compactly extract and render the perceptual information in simulated wave fields. Compelling audio effects such as sound shadowing and scene-dependent reverb are captured in large complex scenes.

Nikunj Raghuvanshi
Microsoft Corporation

John Snyder
Microsoft Research

High-Order Diffraction and Diffuse Reflections For Interactive Sound Propagation in Large Environments

Novel algorithms for interactive diffuse reflections and higher-order diffraction in large-scale virtual environments. The approach can generate plausible sound effects in large, dynamic scenes with multiple sound sources at interactive rates and more than an order-of-magnitude performance improvement over prior approaches.

Dinesh Manocha
University of North Carolina at Chapel Hill

Carl Schissler
University of North Carolina at Chapel Hill

Ravish Mehra
University of North Carolina at Chapel Hill

Eigenmode Compression for Modal Sound Models

A method for significantly compressing modal sound models. By adaptively fitting moving-least-squares approximations and exploiting symmetry and human perception, the method obtains hundred- to thousand-fold compression ratios without audible degradation of the rendered sound.

Timothy Langlois
Cornell University

Doug James
Cornell University

Steven An
Cornell University

Kelvin Jin
Cornell University

Inverse-Foley Animation: Synchronizing Rigid-Body Motions to Sound

This paper introduces Inverse-Foley Animation, a technique for optimizing rigid-body animations so that contact events are synchronized with input sound events. Given a sound, the system can synthesize synchronized motions using graphs built from hundreds of thousands of precomputed motions and millions of contact events.

Timothy Langlois
Cornell University

Doug James
Cornell University

Refractive Radiative Transfer Equation

This paper presents an energy-conserving light transport equation for participating media with a spatially varying index of refraction and solves it with non-linear photon mapping.

Marco Ament
Universität Stuttgart, Karlsruhe Institute of Technology

Christoph Bergmann
Universität Stuttgart

Daniel Weiskopf
Universität Stuttgart