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Localisation of Virtual Sound Sources by Bilateral Cochlear Implant Users

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Sivonen, Ville
dc.contributor.author Fernandez, Janani
dc.date.accessioned 2018-02-23T14:26:49Z
dc.date.available 2018-02-23T14:26:49Z
dc.date.issued 2018-02-12
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/30067
dc.description.abstract This thesis investigates the localisation of virtual sound sources by cochlear implant users. This research is intended to provide insight into the feasibility of utilising virtual sources to test their hearing abilities. In addition, it is hoped that the factors affecting the results can be determined by comparing the results to the patient demographic data. Listening tests were conducted with ten cochlear implant users and a control group of ten normal hearing subjects. Two methods of virtual sound source synthesis were applied: amplitude panning, via vector base amplitude panning, and time panning, via an empirical formula. A two alternative forced choice task was presented to the test subjects, and the results of the test were utilised to derive their minimum audible angle. It was found that amplitude panned sources can indeed be perceived by cochlear implant users and can, therefore, be utilised as a testing tool. Furthermore, it was found that the results were influenced by the age at which the subjects were diagnosed deaf and the time period between the diagnosis and implantation surgery. en
dc.format.extent 50+6
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.title Localisation of Virtual Sound Sources by Bilateral Cochlear Implant Users en
dc.type G2 Pro gradu, diplomityö fi
dc.contributor.school Sähkötekniikan korkeakoulu fi
dc.subject.keyword vochlear implant en
dc.subject.keyword virtual sound en
dc.subject.keyword localisation en
dc.subject.keyword VBAP en
dc.identifier.urn URN:NBN:fi:aalto-201802231604
dc.programme.major Acoustics and Audio Technology fi
dc.programme.mcode ELEC3030 fi
dc.type.ontasot Master's thesis en
dc.type.ontasot Diplomityö fi
dc.contributor.supervisor Pulkki, Ville
dc.programme CCIS - Master’s Programme in Computer, Communication and Information Sciences (TS2013) fi
dc.ethesisid Aalto 9790
dc.location P1 fi

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