Required Measurement Accuracy of Head Dimensions for Modeling the Interaural Time Difference

Bomhardt R, Mejía ICP, Zell A, Fels J. Required Measurement Accuracy of Head Dimensions for Modeling the Interaural Time Difference. J Audio Eng Soc. 2018;66(3):114-126. doi:10.17743/jaes.2018.0005

@article{Bomhardt2018_19380,
  author = {Bomhardt, Ramona and Mejía, Isabel C. Patiño and Zell, Andreas and Fels, Janina},
  title = {{Required Measurement Accuracy of Head Dimensions for Modeling the Interaural Time Difference}},
  journal = {Journal of the Audio Engineering Society},
  volume = {66},
  number = {3},
  pages = {114--126},
  year = {2018},
  month = mar,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2018.0005},
  url = {https://doi.org/10.17743/jaes.2018.0005}
}

TY  - JOUR
TI  - Required Measurement Accuracy of Head Dimensions for Modeling the Interaural Time Difference
AU  - Bomhardt, Ramona
AU  - Mejía, Isabel C. Patiño
AU  - Zell, Andreas
AU  - Fels, Janina
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 66
IS  - 3
SP  - 114
EP  - 126
PY  - 2018
DA  - 2018/03/06
DO  - 10.17743/jaes.2018.0005
UR  - https://doi.org/10.17743/jaes.2018.0005
PB  - Audio Engineering Society
LA  - en
AB  - Numerous studies have shown that on the interaural time difference (ITD) depends on the angle of incident of the sound wave as well as the individual’s anthropometric dimensions. When a geometric model is used for determining ITD, exact anthropometric head dimensions are desirable. However, measuring anthropometric dimensions always introduces uncertainties that are primarily caused by the projection from three-dimensional head shape to one-dimensional measures. This paper describes a listening experiment to derive the direction-dependent just-noticeable time deviation from an individual ITD. The determined threshold is then utilized to calculate the required measurement accuracy of the input dimensions of an ITD model exemplar. A feasibility study is presented in which four required head dimensions of 17 subjects are automatically measured on three-dimensional head models. These models are determined using an RGBD sensor and software for three-dimensional surface reconstruction. The accuracy of the automatically determined anthropometric head dimensions is evaluated by comparing them to dimensions obtained from magnetic resonance imaging scans.
ER  -