In the first experiment, subjects were asked to discriminate whether a sound was emanating from a moving or stationary source. The minimum audible movement angle (MAMA) thus defined was observed to increase as the source velocity increased. MAMA ranged from a low of 8.3° with the slowest velocity employed (90°/s) to a high of 21.2° with the fastest velocity (360°/s). In the second experiment, subjects were asked to localize where the moving source was, at signal on and offset. The results indicate that the apparent onset is displaced in the direction of motion and the amount of this displacement is directly related to source velocity. Less consistent results were observed with signal offset. The present results suggest that the binaural system is relatively insensitive to motion.
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December 1977
December 01 1977
Minimum auditory movement angle: Binaural localization of moving sound sources
D. R. Perrott;
D. R. Perrott
Psychoacoustics Laboratory, California State University, Los Angeles, California 9003
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A. D. Musicant
A. D. Musicant
Psychoacoustics Laboratory, California State University, Los Angeles, California 9003
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J. Acoust. Soc. Am. 62, 1463–1466 (1977)
Citation
D. R. Perrott, A. D. Musicant; Minimum auditory movement angle: Binaural localization of moving sound sources. J. Acoust. Soc. Am. 1 December 1977; 62 (6): 1463–1466. https://doi.org/10.1121/1.381675
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