Parameters for auditory display of height and size

Abstract

The vertical localization, and vertical and horizontal spread, of auditory images was investigated using a vertical 5- loudspeaker array, with the noise-band signal spectrum, loudness level, number of active loudspeakers, and center loudspeaker position as parameters. The signal spectrum and center loudspeaker position affected the image vertical center. Loudness level, and secondarily the signal spectrum, affected the auditory image size. These results, which are consistent with, and extend, previous studies into auditory volume and associations between stimulus frequency and vertical localization, suggest a robust basis for the auditory display of height and size.