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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.
Author (s): Bomhardt, Ramona; Mejía, Isabel C. Patiño; Zell, Andreas; Fels, Janina
Affiliation:
RWTH Aachen University, Institute of Technical Acoustics, Medical Acoustics Group, Aachen, Germany; University of Tübingen, Tübingen, Germany
(See document for exact affiliation information.)
Publication Date:
2018-03-06
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Bomhardt, Ramona; Mejía, Isabel C. Patiño; Zell, Andreas; Fels, Janina; 2018; Required Measurement Accuracy of Head Dimensions for Modeling the Interaural Time Difference [PDF]; RWTH Aachen University, Institute of Technical Acoustics, Medical Acoustics Group, Aachen, Germany; University of Tübingen, Tübingen, Germany; Paper ; Available from: https://aes2.org/publications/elibrary-page/?id=19380
Bomhardt, Ramona; Mejía, Isabel C. Patiño; Zell, Andreas; Fels, Janina; Required Measurement Accuracy of Head Dimensions for Modeling the Interaural Time Difference [PDF]; RWTH Aachen University, Institute of Technical Acoustics, Medical Acoustics Group, Aachen, Germany; University of Tübingen, Tübingen, Germany; Paper ; 2018 Available: https://aes2.org/publications/elibrary-page/?id=19380
@article{bomhardt2018required,
author={bomhardt ramona and mejía isabel c. patiño and zell andreas and fels janina},
journal={journal of the audio engineering society},
title={required measurement accuracy of head dimensions for modeling the interaural time difference},
year={2018},
volume={66},
issue={3},
pages={114-126},
month={march},}
TY – paper
TI – Required Measurement Accuracy of Head Dimensions for Modeling the Interaural Time Difference
SP – 114 EP – 126
AU – Bomhardt, Ramona
AU – Mejía, Isabel C. Patiño
AU – Zell, Andreas
AU – Fels, Janina
PY – 2018
JO – Journal of the Audio Engineering Society
VO – 66
IS – 3
Y1 – March 2018