Resolving front-back ambiguity with head rotation: the role of level dynamics

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorPöntynen, Henrien_US
dc.contributor.authorSalminen, Nellien_US
dc.contributor.departmentDept Signal Process and Acousten
dc.date.accessioned2019-05-06T09:25:37Z
dc.date.available2019-05-06T09:25:37Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2020-04-30en_US
dc.date.issued2019-06-01en_US
dc.description.abstractMaking small head movements facilitates spatial hearing by resolving front-back confusions, otherwise common in free field sound source localization. The changes in interaural time difference (ITD) in response to head rotation provide a robust front-back cue, but whether interaural level difference (ILD) can be used as a dynamic cue is not clear. Therefore, the purpose of the present study was to assess the usefulness of dynamic ILD as a localization cue. The results show that human listeners were capable of correctly indicating the front-back dimension of high-frequency sinusoids based on level dynamics in free field conditions, but only if a wide movement range was allowed (±40∘). When the free field conditions were replaced by simplistic headphone stimulation, front-back responses were in agreement with the simulated source directions even with relatively small movement ranges (±5∘), whenever monaural sound level and ILD changed monotonically in response to head rotation. In conclusion, human listeners can use level dynamics as a front-back localization cue when the dynamics are monotonic. However, in free field conditions and particularly for narrowband target signals, this is often not the case. Therefore, the primary limiting factor in the use of dynamic level cues resides in the acoustic domain behavior of the cue itself, rather than in potential processing limitations or strategies of the human auditory system.en
dc.description.versionPeer revieweden
dc.format.extent12
dc.format.extent196-207
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationPöntynen, H & Salminen, N 2019, ' Resolving front-back ambiguity with head rotation: the role of level dynamics ', Hearing Research, vol. 377, pp. 196-207 . https://doi.org/10.1016/j.heares.2019.03.020en
dc.identifier.doi10.1016/j.heares.2019.03.020en_US
dc.identifier.issn0378-5955
dc.identifier.issn1878-5891
dc.identifier.otherPURE UUID: e4e864cb-ab13-40c6-ae5b-9e7b0c309c75en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/e4e864cb-ab13-40c6-ae5b-9e7b0c309c75en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85064083723&partnerID=8YFLogxKen_US
dc.identifier.otherPURE LINK: http://www.sciencedirect.com/science/article/pii/S0378595518305550en_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/32944099/ELEC_Pontynen_resolving_front_back_ambiguity_HR.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/37792
dc.identifier.urnURN:NBN:fi:aalto-201905062910
dc.language.isoenen
dc.publisherELSEVIER SCIENCE BV
dc.relation.ispartofseriesHearing Researchen
dc.relation.ispartofseriesVolume 377en
dc.rightsopenAccessen
dc.subject.keywordactive localizationen_US
dc.subject.keywordhead rotationen_US
dc.subject.keywordfront-back ambiguityen_US
dc.subject.keywordbinaural cuesen_US
dc.subject.keyworddirectional bandsen_US
dc.subject.keywordacoustic bright spoten_US
dc.subject.keywordHead rotationen_US
dc.subject.keywordActive localizationen_US
dc.subject.keywordFront-back ambiguityen_US
dc.subject.keywordDirectional bandsen_US
dc.subject.keywordAcoustic bright spoten_US
dc.subject.keywordBinaural cuesen_US
dc.titleResolving front-back ambiguity with head rotation: the role of level dynamicsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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