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    Psychophysical Evaluation of Three-Dimensional Auditory Displays

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    This report describes the progress made during the first year of a three-year cooperative research agreement (CRA NCC2-542). The CRA proposed a program of applied psychophysical research designed to determine the requirements and limitations of three-dimensional (3-D) auditory display systems. These displays present synthesized stimuli to a pilot or virtual workstation operator that evoke auditory

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    This report describes the progress made during the first year of a three-year cooperative research agreement (CRA NCC2-542). The CRA proposed a program of applied psychophysical research designed to determine the requirements and limitations of three-dimensional (3-D) auditory display systems. These displays present synthesized stimuli to a pilot or virtual workstation operator that evoke auditory images at predetermined positions in space. The images can be either stationary or moving. In previous years, we completed a number of studies that provided data on listeners' abilities to localize stationary sound sources with 3-D displays. the current focus is on the use of 3-D displays in 'natural' listening conditions, which include listeners' head movements, moving sources, multiple sources and 'echoic' sources. The results of our research on two of these topics, the role of head movements and the role of echoes and reflections, were reported in the most recent semi-annual progress report (Appendix A). In the period since the last progress report we have been studying a third topic, the localizability of moving sources. The results of this research are described. Wightman, Frederic L. Unspecified Center NCC2-542...



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