Abstract
The aim of this study is to examine whether it is possible to recover directly the size of an object from the sound of an impact. Specifically, the study is designed to investigate whether listeners can tell the size of a ball from the sound when it is dropped on plates of different diameters (on one, two, or three plates in Experiments 1, 2, and 3, respectively). In this paradigm, most of the sound produced is from the plate rather than the ball. Listeners were told neither how many different balls or plates were used nor the materials of the balls and plates. Although listeners provided reasonable ball size estimates, their judgments were influenced by the size of the plate: Balls were judged to be larger when dropped on larger plates. Moreover, listeners were generally unable to recognize either ball and plate materials or the number of plates used in Experiments 2 and 3. Finally, various acoustic properties of the sounds are shown to be correlated with listeners’ judgments.
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This work has been supported by the European Commission under contract IST-2000-25287 (“The Sounding Object”: www.soundobject.org).
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Grassi, M. Do we hear size or sound? Balls dropped on plates. Perception & Psychophysics 67, 274–284 (2005). https://doi.org/10.3758/BF03206491
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DOI: https://doi.org/10.3758/BF03206491