Table 2
Statistical summary of the results on measured and calculated anthropometric and HA features.
| Feature | Description | μ | σ | χ | |||
|---|---|---|---|---|---|---|---|
| x 1 | Head width | 156.8 | 9.1 | 11.6 | |||
| x 2 | Head height | 227.7 | 11.7 | 10.3 | |||
| x 3 | Head depth | 199.8 | 10.4 | 10.4 | |||
| x 4 | Pinna offset down | 15.3 (16.6) | 6.5 (7) | 84.6* (83.9*) | |||
| x 5 | Pinna offset back | 3.2 (0.5) | 8.7 (7.1) | 539.6* (2765) | |||
| x 6 | Neck width | 120.1 | 12.3 | 20.5 | |||
| x 7 | Neck height | 42.4 | 13.8 | 65.1 | |||
| x 8 | Neck depth | 128.7 | 20 | 31.1 | |||
| x 9 | Torso-top width | 321.4 | 28.3 | 17.6 | |||
| x 10 | Torso-top height | 192.2 | 25.4 | 26.4 | |||
| x 11 | Torso-top depth | 260 | 35 | 26.9 | |||
| x 12 | Shoulder width | 477.2 | 42.4 | 17.9 | |||
| x 13 | Head offset forward | −8.8 | 26.5 | −600.6* | |||
| x 14 | Height | 1775.2 | 100 | 11.3 | |||
| x 15 | Seated height | 1350.4 | 42.6 | 6.3 | |||
| x 16 | Head circumference | 562.4 | 22.5 | 8 | |||
|
x
17
|
Shoulder circumference |
1117.5 |
96.6 |
17.3 |
|
|
|
| Left ear |
Right ear |
||||||
|
|
|
μ
|
σ
|
χ
|
μ
|
σ
|
χ
|
| d 1 | Cavum-conchae height | 17.8 | 1.4 | 16.3 | 18 | 1.4 | 15.8 |
| d 2 | Cymba-conchae height | 7.9 | 1.8 | 45.5 | 7.9 | 1.7 | 43.5 |
| d 3 | Cavum-conchae width | 15.4 | 2.8 | 37 | 16.2 | 2.6 | 32 |
| d 4 | Fossa height | 16.9 | 4.7 | 56.1 | 17.2 | 4 | 46.8 |
| d 5 | Pinna height | 64.1 | 5.4 | 16.8 | 63.1 | 5.3 | 16.7 |
| d 6 | Pinna width | 31.2 | 2.2 | 14.1 | 32.8 | 2.6 | 16 |
| d 7 | Intertragal-incisure width | 5.2 | 1.6 | 62.4 | 5.3 | 1.7 | 65.4 |
| d 8 | Cavum-conchae depth | 11.6 | 1.6 | 27.4 | 12.5 | 1.8 | 29.1 |
| d 9 | HA-microphones-to-ear-canal offset | 33.7 | 5.1 | 30.2 | 34 | 4.7 | 27.7 |
| d 10 | HA-microphones-to-scalp offset | 4.9 | 2.3 | 92.2 | 5.2 | 2.4 | 93.1 |
| d 11 | HA behind-pinna depth | 8.2 | 2.3 | 56.9 | 7.5 | 2.3 | 59.9 |
| d 12 | HA-microphones-to-pinna-axis offset | 16.2 | 2.5 | 30.6 | 15.5 | 1.8 | 22.9 |
| d 13 | HA-microphones offset up | 9.9 | 10.2 | 205.5* | 9.6 | 10.9 | 226.3* |
| d 14 | HA-microphones offset back | 24.9 | 9.6 | 77.2* | 21.3 | 8.5 | 79.5 |
| Θ1 | Pinna-rotation angle | 58.5 | 9.7 | 33.2 | 55.5 | 7.8 | 28.1 |
| Θ2 | Pinna flare angle | 26.7 | 5.7 | 42.9 | 27.7 | 5.3 | 38.5 |
| Θ3 | Frontal HA-microphones angle | 41.6 | 8 3 | 8.3 | 39.4 | 6.8 | 34.6 |
| ΘE | Horizontal ear-canal angle | 92.5 | 6.6 | 14.2 | 90.4 | 5.3 | 11.6 |
| ΘHA | Horizontal HA-microphones angle | 107.7 | 7.2 | 13.4 | 105 | 6.2 | 11.8 |
Note: Distances and angles are provided in mm and deg, respectively. Mean and standard deviation are represented by μ and σ, respectively, and χ symbolises the percentage deviation 100 · (2σ/μ). Values in brackets for x4 and x5 represent the results for the right ear. Asterisks denote non-meaningful percentage deviations.
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