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Studying room acoustics using a monopole-dipole microphone array  (1998)
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Many of the current virtual acoustic (“3-D audio”) displays for teleconferencing and virtual reality are limited to very simple or non-existent rendering of a diffuse sound field. Perceptual performance and the overall quality of virtual acoustic reality systems have been shown to be improved with the inclusion of simulated reverberation (e.g., Begault 1992). An accurate rendering of spatial qualities of a measured room impulse response (RIR) is particularly useful for subsequent aurilization. Research has been ongoing to devise a technique to measure the spatial aspects of RIR so that individualized head-related transfer functions cam then be applied in post-processing, rather than as part of the initial measurement. Intensity measurement techniques have been proposed, and Essert (1996; 1997) recently proposed a method based on sound pressure cross-correlations.
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3-D audio, acoustics, microphone array, monopole-dipole, Perceptual performan, teleconferencing, virtual reality
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Proceedings of the16th International Congress on Acoustics and 135th Meeting of the Acoustical Society of America, Seattle, 369-370.
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Curator: Phil So
NASA Official: Alonso Vera
Last Updated: August 15, 2019