Capturing the Elevation Dependence of Interaural Time Difference with an Extension of the Spherical-Head Model

Sridhar R, Choueiri E. Capturing the Elevation Dependence of Interaural Time Difference with an Extension of the Spherical-Head Model. In: AES Convention 139. Audio Engineering Society; 2015. Paper 9447. Available from: https://aes.org/publications/elibrary-page/?id=18003

@inproceedings{Sridhar2015_18003,
  author = {Sridhar, Rahulram and Choueiri, Edgar},
  title = {{Capturing the Elevation Dependence of Interaural Time Difference with an Extension of the Spherical-Head Model}},
  booktitle = {AES Convention 139},
  note = {Paper 9447},
  year = {2015},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18003}
}

TY  - CPAPER
TI  - Capturing the Elevation Dependence of Interaural Time Difference with an Extension of the Spherical-Head Model
AU  - Sridhar, Rahulram
AU  - Choueiri, Edgar
T2  - AES Convention 139
M1  - Paper 9447
PY  - 2015
DA  - 2015/10/06
UR  - https://aes.org/publications/elibrary-page/?id=18003
PB  - Audio Engineering Society
LA  - en
AB  - An extension of the spherical-head model (SHM) is developed to incorporate the elevation dependence observed in measured interaural time differences (ITDs). The model aims to address the inability of the SHM to capture this elevation dependence, thereby improving ITD estimation accuracy while retaining the simplicity of the SHM. To do so, the proposed model uses an elevation-dependent head radius that is individualized from anthropometry. Calculations of ITD for 12 listeners show that the proposed model is able to capture this elevation dependence and, for high frequencies and at large azimuths, yields a reduction in mean ITD error of up to 13 microseconds (3% of the measured ITD value), compared to the SHM. For low-frequency ITDs, this reduction is up to 160 microseconds (23%).
ER  -