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Timbre perception of cochlear implant users
Dissertation (MEng)--University of Pretoria, 2011.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2013
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| _version_ | 1867613693696540672 |
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| access_status_str | Open Access |
| author2 | Hanekom, J.J. (Johannes Jurgens) |
| author_browse | Hanekom, J.J. (Johannes Jurgens) |
| author_facet | Hanekom, J.J. (Johannes Jurgens) |
| collection | Thesis |
| dc_rights_str_mv | © 2011, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MEng)--University of Pretoria, 2011. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/31130 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:40:12.572Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/31130 Timbre perception of cochlear implant users Hanekom, J.J. (Johannes Jurgens) Labuschagne, Ilse Bernadette UCTD Dissertation (MEng)--University of Pretoria, 2011. The timbre perception of cochlear implantees (CI) is poor compared to normal hearing (NH) listeners. The cues that are normally transmitted to NH listeners may be less salient or even absent for CI users. From the literature, two spectral (brightness (Tb) and irregularity (IRR)) and two temporal timbre parameters (log rise-time (LRT) and sustain/decay (S/D) parameter (n)) have been identified as important timbre parameters. Each of these parameters was extracted for a set of thirteen instruments. Sounds could be resynthesized according to the specific timbre parameter set. The variation of loudness, pitch and perceived duration as functions of the timbre parameters were investigated to provide systematic balancing methods. The just-noticeable differences (JNDs) were obtained for each of the parameters for thirteen instruments for NH listeners and a reduced instrument set of nine instruments for the CI users using a 1-up, 2-down, two-alternative, forced choice procedure. From the JNDs, predicted confusion matrices were constructed. From the confusion matrices, a feature information transmission analysis (FITA) indicated the salience of each of the parameters and NH and CI results could be compared. Electrical, Electronic and Computer Engineering MEng Unrestricted 2013-09-09T12:06:41Z 2012-08-14 2013-09-09T12:06:41Z 2012-04-23 2011 2012-08-08 Dissertation Labuschagne, IB 2011, Timbre perception of cochlear implant users, MEng Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/31130> E12/4/414/gm http://hdl.handle.net/2263/31130 http://upetd.up.ac.za/thesis/available/etd-08082012-125540/ en © 2011, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Timbre perception of cochlear implant users |
| title | Timbre perception of cochlear implant users |
| title_full | Timbre perception of cochlear implant users |
| title_fullStr | Timbre perception of cochlear implant users |
| title_full_unstemmed | Timbre perception of cochlear implant users |
| title_short | Timbre perception of cochlear implant users |
| title_sort | timbre perception of cochlear implant users |
| topic | UCTD |
| url | http://hdl.handle.net/2263/31130 http://upetd.up.ac.za/thesis/available/etd-08082012-125540/ |