2026-09-22T03:37:41Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/50364 2023-07-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Made available in DSpace on 2014-09-16T17:12:09Z (GMT). No. of bitstreams: 3 Zuofu_Cheng.pdf: 3557751 bytes, checksum: 1cdde88729dfaf5e9985322e9e6c9039 (MD5) CHENG_dissertation_sources.zip: 5246216 bytes, checksum: 0c7b71d2ccfb24e9b8ecff4321703211 (MD5) license.txt: 4060 bytes, checksum: 4e55f5d111fa448383b9fbd285a0559a (MD5) Embargo set by: Seth Robbins for item 50475 Lift date: 2016-09-16T17:13:01Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Limited Restriction Lifted for Item 50475 on 2016-09-22T20:59:28Z. http://hdl.handle.net/2142/50364 en room acoustics Haken, Lippold Jones, Douglas L. Haken, Lippold Patel, Sanjay J. Levinson, Stephen E. Shaffer, Eric G. Cheng, Zuofu 2014-09-16T17:12:09Z 2014-09-16T17:12:09Z 2016-09-22T20:59:28Z 2014-08 2014-09-16 2014-08 Current-generation video game applications use sampled recordings along with positional audio and modular effects to create the audio experience. While computationally efficient, this presents multiple immersion and game play limitations. We propose instead a system for simulating room acoustics in real-time based on geometry and material descriptors. This system uses commodity graphics processors (GPUs) and leverages the parallelism inherent in a ray-based acoustics model to compute the reflected and transmitted acoustic response from a number of sound sources to a stereo listener in arbitrary triangle-based geometry. Our goal is to describe a complete acoustic simulation engine which requires little additional information beyond what is already available to the game engine and generates realistic and immersive game play audio. First, we present background on current generation video game audio as well as advancements in architectural room acoustic simulation. This survey demonstrates both the limitations in current generation applications, as well as establishes computation and software design constraints which a replacement system must satisfy. Chapter 1 will also discuss the theoretical justification for ray acoustic methods, as well as limitations in certain scenarios. We will present this in the context of current generation architectural acoustic simulation software, which largely represents the state-of-the-art understanding of the underlying acoustics which govern sound propagation in spaces. Finally, Chapter 1 will also introduce useful concepts and terminology which will justify some of the engineering decisions made in the remainder of the text. The remainder of the dissertation will discuss the technical construction of the system. Specifically, it attempts to justify the engineering decisions and trade-offs which were made in order to allow for real-time performance. We will discuss the organization of the GPU family for which the system was designed, and how the problem was tailored to fit within the constraints of the computational architecture. Optimizations specific to the architecture used will be discussed here, as well as their subjective effects on sound and the experience quality. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2014-07-09T21:01:32Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 CHENG_dissertation_sources.zip: 5246216 bytes, checksum: 0c7b71d2ccfb24e9b8ecff4321703211 (MD5) CHENG dissertation (revised 7-9).pdf: 3557751 bytes, checksum: 1cdde88729dfaf5e9985322e9e6c9039 (MD5) Copyright 2014 Zuofu Cheng audio Digital Signal Processor (DSP) Graphics Processing Unit (GPU) parallel video games simulation Design of a real-time GPU accelerated acoustic simulation engine for interactive applications text Electrical & Computer Eng 1933 Electrical & Computer Engr 1200 University of Illinois at Urbana-Champaign Dissertation Ph.D. PHD:Electr & Computer Eng-UIUC 10KS1200PHD