Build-up of auditory stream segregation induced by tone sequences of constant or alternating frequency and the resetting effects of single deviants

Nicholas R. Haywood, Brian Roberts*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Three experiments investigated the dynamics of auditory stream segregation. Experiment 1 used a 2.0-s constant-frequency inducer (10 repetitions of a low-frequency pure tone) to promote segregation in a subsequent, 1.2-s test sequence of alternating low- and high-frequency tones. Replacing the final inducer tone with silence reduced reported test-sequence segregation substantially. This reduction did not occur when either the 4th or 7th inducer was replaced with silence. This suggests that a change at the induction/test-sequence boundary actively resets buildup, rather than less segregation occurring simply because fewer inducer tones were presented. Furthermore, Experiment 2 found that a constant-frequency inducer produced its maximum segregation-promoting effect after only 3 tone cycles - this contrasts with the more gradual build-up typically observed for alternating sequences. Experiment 3 required listeners to judge continuously the grouping of 20-s test sequences. Constant-frequency inducers were considerably more effective at promoting segregation than alternating ones; this difference persisted for ∼10 s. In addition, resetting arising from a single deviant (longer tone) was associated only with constant-frequency inducers. Overall, the results suggest that constant-frequency inducers promote segregation by capturing one subset of test-sequence tones into an on-going, pre-established stream and that a deviant tone may reduce segregation by disrupting this capture.

Original languageEnglish
Title of host publicationICA 2013 Montreal
PublisherAcoustical Society of America
Number of pages4
DOIs
Publication statusPublished - 2 Jun 2013
Event21st International Congress on Acoustics / 165th meeting of the Acoustical Society of America / 52nd meeting of the Canadian Acoustical Association - Montréal, Canada
Duration: 2 Jun 20137 Jun 2013

Publication series

NameProceedings of Meetings on Acoustics (POMA)
PublisherAcoustical Society of America
Number1
Volume19
ISSN (Print)1939-800X
ISSN (Electronic)939-800X

Congress

Congress21st International Congress on Acoustics / 165th meeting of the Acoustical Society of America / 52nd meeting of the Canadian Acoustical Association
Abbreviated titleICA 2013
CountryCanada
CityMontréal
Period2/06/137/06/13

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  • Cite this

    Haywood, N. R., & Roberts, B. (2013). Build-up of auditory stream segregation induced by tone sequences of constant or alternating frequency and the resetting effects of single deviants. In ICA 2013 Montreal [050080] (Proceedings of Meetings on Acoustics (POMA); Vol. 19, No. 1). Acoustical Society of America. https://doi.org/10.1121/1.4799220