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      N » 2: Multi-speaker Display Systems for Virtual Reality and Spatial Audio Projection


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      International Conference on Auditory Display '98 (AD)

      Auditory Display

      1-4 November 1998

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          This paper describes multi-speaker display systems for immersive auditory environments, collaborative projects, realistic acoustic modeling, and live musical performance. Two projects are described. The sound sub-system of the Princeton Display Wall project, and the NBody musical instrument body radiation response project. The Display Wall is an 18’ x 8’ rear-projection screen, illuminated by 8 high-resolution video projectors. Each projector is driven by a 4-way symmetric-multi-processor PC. The audio sub-system of this project involves 26 loudspeakers and server PCs to drive the speakers in real time from soundfile playback, audio effects applied to incoming audio streams, and parametric sound synthesis. The NBody project involves collecting and using directional impulse responses from a variety of stringed musical instruments. Various signal processing techniques were used to investigate, factor, store, and implement the collected impulse responses. A software workbench was created which allows virtual microphones to be placed around a virtual instrument, and then allows signals to be processed through the resulting derived transfer functions. Multi-speaker display devices and software programs were constructed which allow real-time application of of the filter functions to arbitrary sound sources. This paper also discusses the relation of spherical display systems to conventional systems in terms of spatial audio and sound-field reconstruction, with the conclusion that most conventional techniques can be used for spherical display systems as well.

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          Author and article information

          November 1998
          November 1998
          : 1-5
          Department of Computer Science
          Department of Music

          Princeton University, Princeton, NJ, USA
          Department of Computer Science (also Music)

          Princeton University, Princeton, NJ, USA
          © Perry R. Cook et al. Published by BCS Learning and Development Ltd. International Conference on Auditory Display '98, University of Glasgow, UK

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          International Conference on Auditory Display '98
          University of Glasgow, UK
          1-4 November 1998
          Electronic Workshops in Computing (eWiC)
          Auditory Display
          Product Information: 1477-9358BCS Learning & Development
          Self URI (journal page): https://ewic.bcs.org/
          Electronic Workshops in Computing


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