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- W4250486285 abstract "Virtual sound source motion has been implemented in the Army Research Laboratory's Environment for Auditory Research, which contains a 57-channel spherical loudspeaker array located in a semi-anechoic chamber. Using the low-latency PortAudio application programming interface from the Psychophysics Toolbox Version 3, 57 channels of streaming audio are dynamically updated in real-time using MATLAB for signal processing. Both Distance-Based Amplitude Panning (DBAP) and Vector Base Amplitude Panning (VBAP) have been implemented in MATLAB for controlling source motion. Sources are defined on a given path, such as a circle, ellipse, or the dogbone pattern often used in aviation. Although DBAP works convincingly for virtual sources located on the sphere defined by the loudspeaker array, VBAP is needed to position sources outside the array. Source motion paths are defined parametrically with respect to time, and the playback buffer updates the panned position every 11.5 milliseconds. Based on the source's instantaneous distance, diffuse-field or free-field amplitude attenuation is added in MATLAB as well as air absorption filtering. This virtual sound source method will be used for a variety of audio simulations and auditory experiments." @default.
- W4250486285 created "2022-05-12" @default.
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- W4250486285 date "2012-01-01" @default.
- W4250486285 modified "2023-09-29" @default.
- W4250486285 title "Motion simulation in the environment for auditory research" @default.
- W4250486285 doi "https://doi.org/10.1121/1.4704670" @default.
- W4250486285 hasPublicationYear "2012" @default.
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