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ERIC Number: EJ934351
Record Type: Journal
Publication Date: 2011-Jun
Pages: 10
Abstractor: As Provided
Reference Count: 53
ISSN: ISSN-0096-1523
The Perception of Concurrent Sound Objects in Harmonic Complexes Impairs Gap Detection
Leung, Ada W. S.; Jolicoeur, Pierre; Vachon, Francois; Alain, Claude
Journal of Experimental Psychology: Human Perception and Performance, v37 n3 p727-736 Jun 2011
Since the introduction of the concept of auditory scene analysis, there has been a paucity of work focusing on the theoretical explanation of how attention is allocated within a complex auditory scene. Here we examined signal detection in situations that promote either the fusion of tonal elements into a single sound object or the segregation of a mistuned element (i.e., harmonic) that "popped out" as a separate individuated auditory object and yielded the perception of concurrent sound objects. On each trial, participants indicated whether the incoming complex sound contained a brief gap or not. The gap (i.e., signal) was always inserted in the middle of one of the tonal elements. Our findings were consistent with an object-based account in which perception of two simultaneous auditory objects interfered with signal detection. This effect was observed for a wide range of gap durations and was greater when the mistuned harmonic was perceived as a separate object. These results suggest that attention may be initially shared among concurrent sound objects thereby reducing listeners' ability to process acoustic details belonging to a particular sound object. These findings provide new theoretical insight for our understanding of auditory attention and auditory scene analysis. (Contains 4 figures and 1 footnote.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A