Effects of unit formation on the perception of a changing sound

The Quarterly Journal of Experimental Psychology : QJEP
Poppy A C Crum, A S Bregman

Abstract

The effects of subunit formation on adult listeners' ability to notice changes in a continuous spectral gradient of sound were studied. Results of this experiment support the idea that the auditory system processes information differently within a unit, and that this processing does not occur unless the perceptual system detects unit boundaries. In this experiment, silences were inserted into a continuously changing sound to cause the formation of short units. Listeners noticed the change earlier in conditions with silences inserted than in to conditions where the transition was either unbroken or broken by loud noise bursts. Results are discussed in terms of two processes, one that accentuates stimulus properties present at moments of onset and offset, and a second that uses onsets and offsets to signal the beginnings and ends of units and reduces the change perceived within units.

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Citations

Sep 13, 2013·Attention, Perception & Psychophysics·Tsuyoshi Kuroda, Simon Grondin
Jun 11, 2009·The Journal of the Acoustical Society of America·Tom GoossensArmin Kohlrausch
May 24, 2011·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Annekathrin WeiseErich Schröger

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