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Related Experiment Videos

Hearing shape.

A J Kunkler-Peck1, M T Turvey

  • 1Center for the Ecological Study of Perception and Action, University of Connecticut, USA. peck@binah.cc.brandeis.edu

Journal of Experimental Psychology. Human Perception and Performance
|March 4, 2000
PubMed
Summary
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Listeners can discern object dimensions and shapes by sound alone, irrespective of material. This study explores auditory perception of geometric properties, demonstrating sound

Area of Science:

  • Auditory Perception
  • Acoustics
  • Psychophysics

Background:

  • Humans can infer object properties from sound.
  • Acoustic properties are influenced by an object's physical characteristics and dimensions.

Purpose of the Study:

  • To investigate the ability to perceive geometric dimensions (height, width) and shapes (circular, triangular, rectangular) of objects solely through sound.
  • To determine how material composition affects auditory perception of object dimensions.

Main Methods:

  • Participants listened to suspended objects vibrated by a pendular hammer.
  • Analogue measures of perceived dimensions and shape identification were collected.
  • Experiments varied object materials (steel, wood, Plexiglas) and shapes.

Related Experiment Videos

Main Results:

  • Perceived proportions of height and width matched actual dimensions, regardless of material.
  • Participants successfully identified shapes (circular, triangular, rectangular) irrespective of material.
  • Auditory perception of dimensions was dependent on physical and linear properties.

Conclusions:

  • Sound provides reliable cues for discerning object dimensions and shapes.
  • Acoustic structure, derived from physical properties, is key to auditory perception of geometric form.
  • Material composition does not impede the perception of shape and relative dimensions via sound.