Title:
Measurement and validation of bone-conduction adjustment functions in virtual 3D audio displays

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dc.contributor.advisor Walker, Bruce N.
dc.contributor.author Stanley, Raymond M. en_US
dc.contributor.committeeMember Corballis, Paul M.
dc.contributor.committeeMember Corso, Gregory M.
dc.contributor.committeeMember Folds, Dennis J.
dc.contributor.committeeMember Houtsma, Adrianus J. M.
dc.contributor.department Psychology en_US
dc.date.accessioned 2009-08-26T18:16:34Z
dc.date.available 2009-08-26T18:16:34Z
dc.date.issued 2009-07-06 en_US
dc.description.abstract Virtual three-dimensional auditory displays (V3DADs) use digital signal processing to deliver sounds (typically through headphones) that seem to originate from specific external spatial locations. This set of studies investigates the delivery of V3DADs through bone-conduction transducers (BCTs) in addition to conventional headphones. Although previous research has shown that spatial separation can be induced through BCTs, some additional signal adjustments are required for optimization of V3DADs, due to the difference in hearing pathways. The present studies tested a bone-conduction adjustment function (BAF) derived from equal-loudness judgments on pure tones whose frequencies were spaced one critical band apart. Localization performance was assessed through conventional air-conduction headphones, BCTs with only transducer correction, and BCTs with a BAF. The results showed that in the elevation plane, the BAF was effective in restoring the spectral cues altered by the bone-conduction pathway. No evidence for increased percept variability or decreased lateralization in the bone-conduction conditions was found. These findings indicate that a V3DAD can be implemented on a BCT and that a BAF will improve performance, but that there is an apparent performance cost that cannot be addressed with BAFs measured using the methodology in the present studies. en_US
dc.description.degree Ph.D. en_US
dc.identifier.uri http://hdl.handle.net/1853/29754
dc.publisher Georgia Institute of Technology en_US
dc.subject Bone-conduction transducer en_US
dc.subject Head-related transfer function (HRTF) en_US
dc.subject Bone-conduction adjustment function (BAF) en_US
dc.subject Spatial audio en_US
dc.subject Bone conduction en_US
dc.subject.lcsh Surround-sound systems
dc.subject.lcsh Directional hearing
dc.subject.lcsh Bone conduction
dc.subject.lcsh Transducers
dc.title Measurement and validation of bone-conduction adjustment functions in virtual 3D audio displays en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Walker, Bruce N.
local.contributor.corporatename College of Sciences
local.contributor.corporatename School of Psychology
relation.isAdvisorOfPublication 5bedf397-416e-498e-aa60-c67c0ee43473
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
relation.isOrgUnitOfPublication 768a3cd1-8d73-4d47-b418-0fc859ce897d
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