Anthropometric Individualization of Head-Related Transfer Functions Analysis and Modeling
Human sound localization helps to pay attention to spatially separated speakers using interaural level and time differences as well as angle-dependent monaural spectral cues. In a monophonic teleconference, for instance, it is much more difficult to distinguish between different speakers due to miss...
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| Materiálatiipa: | Online |
| Giella: | eaŋgalasgiella |
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Logos Verlag Berlin
2022
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| Fáttát: | |
| Liŋkkat: | OCN: 1260354623 |
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| _version_ | 1869522620991406080 |
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| author | Bomhardt, Ramona |
| author_browse | Bomhardt, Ramona |
| author_facet | Bomhardt, Ramona |
| author_sort | Bomhardt, Ramona |
| collection | Directory of Open Access Books |
| description | Human sound localization helps to pay attention to spatially separated speakers using interaural level and time differences as well as angle-dependent monaural spectral cues. In a monophonic teleconference, for instance, it is much more difficult to distinguish between different speakers due to missing binaural cues. Spatial positioning of the speakers by means of binaural reproduction methods using head-related transfer functions (HRTFs) enhances speech comprehension. These HRTFs are influenced by the torso, head and ear geometry as they describe the propagation path of the sound from a source to the ear canal entrance. Through this geometry-dependency, the HRTF is directional and subject-dependent. To enable a sufficient reproduction, individual HRTFs should be used. However, it is tremendously difficult to measure these HRTFs. For this reason this thesis proposes approaches to adapt the HRTFs applying individual anthropometric dimensions of a user. Since localization at low frequencies is mainly influenced by the interaural time difference, two models to adapt this difference are developed and compared with existing models. Furthermore, two approaches to adapt the spectral cues at higher frequencies are studied, improved and compared. Although the localization performance with individualized HRTFs is slightly worse than with individual HRTFs, it is nevertheless still better than with non-individual HRTFs, taking into account the measurement effort. |
| format | Online |
| id | doab-20.500.12854ir-84257 |
| institution | Directory of Open Access Books |
| language | eng |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Logos Verlag Berlin |
| publisherStr | Logos Verlag Berlin |
| record_format | ojs |
| spelling | doab-20.500.12854ir-842572025-07-30T18:51:25Z Anthropometric Individualization of Head-Related Transfer Functions Analysis and Modeling Bomhardt, Ramona Technology & Engineering Electronics Science Physics Human sound localization helps to pay attention to spatially separated speakers using interaural level and time differences as well as angle-dependent monaural spectral cues. In a monophonic teleconference, for instance, it is much more difficult to distinguish between different speakers due to missing binaural cues. Spatial positioning of the speakers by means of binaural reproduction methods using head-related transfer functions (HRTFs) enhances speech comprehension. These HRTFs are influenced by the torso, head and ear geometry as they describe the propagation path of the sound from a source to the ear canal entrance. Through this geometry-dependency, the HRTF is directional and subject-dependent. To enable a sufficient reproduction, individual HRTFs should be used. However, it is tremendously difficult to measure these HRTFs. For this reason this thesis proposes approaches to adapt the HRTFs applying individual anthropometric dimensions of a user. Since localization at low frequencies is mainly influenced by the interaural time difference, two models to adapt this difference are developed and compared with existing models. Furthermore, two approaches to adapt the spectral cues at higher frequencies are studied, improved and compared. Although the localization performance with individualized HRTFs is slightly worse than with individual HRTFs, it is nevertheless still better than with non-individual HRTFs, taking into account the measurement effort. 2022-06-19T04:03:39Z 2022-06-19T04:03:39Z 2022-06-18T05:39:25Z 2017 book OCN: 1260354623 https://library.oapen.org/handle/20.500.12657/56804 9783832545437 https://directory.doabooks.org/handle/20.500.12854/84257 eng open access image/jpeg image/jpeg image/jpeg image/jpeg image/jpeg n/a n/a n/a n/a n/a https://library.oapen.org/bitstream/20.500.12657/56804/1/external_content.pdf https://library.oapen.org/bitstream/20.500.12657/56804/1/external_content.pdf https://library.oapen.org/bitstream/20.500.12657/56804/1/external_content.pdf https://library.oapen.org/bitstream/20.500.12657/56804/1/external_content.pdf https://library.oapen.org/bitstream/20.500.12657/56804/1/external_content.pdf Logos Verlag Berlin Logos Verlag Berlin https://doi.org/10.30819/4543 https://doi.org/10.30819/4543 04b263a1-7fba-4491-9eae-1c394ac42fc3 Knowledge Unlatched 9783832545437 Knowledge Unlatched (KU) KU Open Services Logos Verlag Berlin open access |
| spellingShingle | Technology & Engineering Electronics Science Physics Bomhardt, Ramona Anthropometric Individualization of Head-Related Transfer Functions Analysis and Modeling |
| title | Anthropometric Individualization of Head-Related Transfer Functions Analysis and Modeling |
| title_full | Anthropometric Individualization of Head-Related Transfer Functions Analysis and Modeling |
| title_fullStr | Anthropometric Individualization of Head-Related Transfer Functions Analysis and Modeling |
| title_full_unstemmed | Anthropometric Individualization of Head-Related Transfer Functions Analysis and Modeling |
| title_short | Anthropometric Individualization of Head-Related Transfer Functions Analysis and Modeling |
| title_sort | anthropometric individualization of head related transfer functions analysis and modeling |
| topic | Technology & Engineering Electronics Science Physics |
| topic_facet | Technology & Engineering Electronics Science Physics |
| url | OCN: 1260354623 |
| work_keys_str_mv | AT bomhardtramona anthropometricindividualizationofheadrelatedtransferfunctionsanalysisandmodeling |