The IHA database of human geometries including torso, head and complete outer ears for acoustic research

The IHA database of human geometries including torso, head and complete outer ears for acoustic research License: This database is published under the Creative Commons CC-BY-NC-SA 4.0 license. You are free to use, transform and redistribute the data, provided you may not use the data for commercial purposes, you attribute the original source [1, 2] and redistributions are made under a similar license. ©Jade Hochschule, Oldenburg, Institut für Hörtechnik und Audiologie (IHA). Authors: Reinhild Roden Institut für Hörtechnik und Audiologie Jade Hochschule Oldenburg, Ofener Str. 16/19, 26121 Oldenburg, Germany e-mail: [email protected] Matthias Blau Institut für Hörtechnik und Audiologie Jade Hochschule Oldenburg, Ofener Str. 16/19, 26121 Oldenburg, Germany and Cluster of Excellence “Hearing4All“ e-mail: [email protected] Last update: 25 November 2025 Content: This is the second version of the IHA database, which is being created in the project HAPPAA C1 funded by the Deutsche Forschungsgemeinschaft (DFG) – Projektnummer 352015383 - SFB 1330 C1. (https://uol.de/en/sfb-1330-hearing-acoustics) The database includes the entire sample of 58 human geometries comprising the torso, head and the entire outer ear including the ear canal and eardrum. The data are available in the 3D object format ‘stl’. Table 1 summarizes the sex, age, height, and weight of the study participants at the time of data collection. Table 1: demographic data of the subjects, as well as body measurements geometry number sex age [years] height [cm] weight [kg] 1 w 28 174 57 2 m 53 184 75 3 w 33 170 57 4 w 21 172 65 5 m 27 193 90 6 m 41 177 80 7 m 26 181 90 8 w 30 167 61 9 m 27 180 75 10 m 39 186 84 11 m 30 170 76 12 m 35 178 85 13 m 36 185 68 14 m 23 180 65 15 w 23 172 60 16 m 21 193 120 17 w 22 170 53 18 w 24 170 62 19 m 35 175 73 20 w 44 169 70 21 w 60 166 50 22 w 80 175 80 23 m 27 184 75 24 w 33 175 140 25 m 54 178 96 26 m 64 178 78 27 w 48 176 75 28 w 69 168 74 29 m 40 188 75 30 m 59 182 93 31 m 48 177 75 32 w 47 161 66 33 w 56 165 57 34 m 74 174 80 35 w 53 172 87 36 w 72 168 67 37 w 73 166 71 38 m 56 188 105 39 m 28 172 69 40 m 44 186 98 41 w 68 172 68 42 m 30 192 95 43 m 72 175 84 44 w 48 179 72 45 m 53 185 70 46 w 69 168 71 47 w 75 170 64 48 w 71 165 70 49 w 47 150 40 50 m 71 172 73 51 m 73 181 79 52 w 44 165 60 53 w 56 165 59 54 m 24 182 90 55 w 74 167 97 56 m 74 176 82 57 w 35 179 74 58 w 35 173 68 Methods of creation & accuracy By the use of various optical hand-held 3D scanners, as well as magnetic resonance imaging (MRI), subject’s head, torso and outer ear geometries with the ear canals and the eardrums were determined. The acquisition of individual geometries is described in [1]. There the assessment of the subjects, scanning of head, torso and outer ear geometries, the imaging of the medial part of the ear canal and the assembling of the geometry is explained in detail. The interaural center of each geometry was placed approximately at the coordinate origin using the left and right tragus and the tip of the nose. The geometries were truncated 0.5 m below the xy-plane. The final re-meshing was done in COMSOL 5.6. with parameters that can be seen in Table 2. Table 2: parameters for the re-meshing defining the final accuracy surface Min element size [mm] Max element size [mm] Max element growth rate Curvature factor Resolution of narrow regions outer ears 0.01 0.4 1.3 5 10 head 2 3 1.5 5 5 face 30 30 1.5 0.6 0.01 torso 5 10 1.5 0.6 2 head face outer ear torso Figure 1: example for geometry 3, showing single surfaces and the fine resolution of the outer ear References: [1] Roden, R. & Blau, M. (2020). The IHA database of human geometries including torso, head and complete outer ears for acoustic research, in Proc. Internoise, Seoul, Korea, Aug. 2020, pp. 4226-4237. https://www.ingentaconnect.com/content/ince/incecp/2020/00000261/00000002/art00026 [2] Roden, R., & Blau, M. (2025). “The IHA database of human geometries including torso, head and complete outer ears for acoustic research. V2,” DOI: 10.5281/zenodo.16949997. Funding: Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project ID 352015383 – SFB 1330 C 1