AD-Frustum: Adaptive Frustum Tracing for Interactive Sound Propagation

Chandak, Anish; Lauterbach, Christian; Taylor, Micah; Ren, Zhimin; Manocha, Dinesh

doi:10.1109/tvcg.2008.111

Cited by 68 publications

(55 citation statements)

References 34 publications

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“…The frustum tracing technique is such a variation, wherein frustum-shaped beams are loosely cut against reflecting polygons such that they retain their original rectangular cross-section. 36,133 Moreover, the adaptive frustum tracing is able to create frustums for diffracting edges, thus further enhancing the realism of the acoustic simulation. 36 The diffraction computation is based on the UTD principle.…”

mentioning

confidence: 99%

Overview of geometrical room acoustic modeling techniques

Savioja¹,

Svensson

2015

The Journal of the Acoustical Society of America

287

190

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Computerized room acoustics modeling has been practiced for almost 50 years up to date. These modeling techniques play an important role in room acoustic design nowadays, often including auralization, but can also help in the construction of virtual environments for such applications as computer games, cognitive research, and training. This overview describes the main principles, landmarks in the development, and state-of-the-art for techniques that are based on geometrical acoustics principles. A focus is given to their capabilities to model the different aspects of sound propagation: specular vs diffuse reflections, and diffraction.

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mentioning

confidence: 99%

Overview of geometrical room acoustic modeling techniques

Savioja¹,

Svensson

2015

The Journal of the Acoustical Society of America

287

190

View full text Add to dashboard Cite

show abstract

“…Fast computer systems are the basis for generating room impulse responses in a short period of time, in optimized systems results can be provided even in real-time. Next to the application of room acoustics simulation for the designing process of a room, the reduced calculation times led to an application of room acoustics simulation and auralization in Virtual Reality 6 and can also be integrated in computer games 7 . Systems including room acoustics simulation are usually based on geometrical acoustics, the ray-based simulation techniques guarantee sufficient results in the mid and high frequency bands.…”

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confidence: 99%

Interactive Real-Time Simulation and Auralization for Modifiable Rooms

et al. 2014

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To study the effects of any changes to a room or setting on the room acoustics, a framework was developed that enables immediate acoustic and visual feedback to the user. This is achieved by running interactive room acoustics simulations and auralizations in real-time. Physically based binaural room impulse responses (BRIRs) are calculated using the image source method and ray tracing and are divided into direct sound, early reflections and late reverberation. Any part of the BRIR is updated as quickly as possible depending on the user's interaction with the scene. This includes changes to sources and receivers (positions/orientations/directivities/HRTF), to surface materials and to the room geometry itself. Using streaming low-latency convolution, an immediate feedback is provided to the user. A parallelization concept features multi-threading and networked PC-clusters, so that the workload can be effectively distributed, offering a scalability to simulate small to huge scenes, depending on the available computation power. For convenient scene design and interaction, a plug-in for Trimble SketchUp was developed that enables real-time room acoustics and room acoustics parameter visualization to this easy-to-use CAD modeling tool.

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“…Many more works have been published in this area, which also concentrated on real-time rendering [4], or nongraphical applications such as audio rendering. Two examples for this are the works by Funkhouser et al [12] and Chandak et al [24].…”

Section: Related Workmentioning

confidence: 99%

Efficient Rasterization for Outdoor Radio Wave Propagation

Schmitz

Rick

Karolski

et al. 2011

IEEE Trans. Visual. Comput. Graphics

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Abstract-Conventional beam tracing can be used for solving global illumination problems. It is an efficient algorithm and performs very well when implemented on the GPU. This allows us to apply the algorithm in a novel way to the problem of radio wave propagation. The simulation of radio waves is conceptually analogous to the problem of light transport. We use a custom, parallel rasterization pipeline for creation and evaluation of the beams. We implement a subset of a standard 3D rasterization pipeline entirely on the GPU, supporting 2D and 3D frame buffers for output. Our algorithm can provide a detailed description of complex radio channel characteristics like propagation losses and the spread of arriving signals over time (delay spread). Those are essential for the planning of communication systems required by mobile network operators. For validation, we compare our simulation results with measurements from a real-world network. Furthermore, we account for characteristics of different propagation environments and estimate the influence of unknown components like traffic or vegetation by adapting model parameters to measurements.

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AD-Frustum: Adaptive Frustum Tracing for Interactive Sound Propagation

Cited by 68 publications

References 34 publications

Overview of geometrical room acoustic modeling techniques

Overview of geometrical room acoustic modeling techniques

Interactive Real-Time Simulation and Auralization for Modifiable Rooms

Efficient Rasterization for Outdoor Radio Wave Propagation

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