Capturing the elevation dependence of interaural time difference with an extension of the spherical-head model

Rahulram Sridhar, Edgar Y. Choueiri

Research output: Contribution to conferencePaper

5 Scopus citations

Abstract

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%).

Original languageEnglish (US)
StatePublished - Jan 1 2015
Event139th Audio Engineering Society International Convention, AES 2015 - New York, United States
Duration: Oct 29 2015Nov 1 2015

Other

Other139th Audio Engineering Society International Convention, AES 2015
CountryUnited States
CityNew York
Period10/29/1511/1/15

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Modeling and Simulation

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    Sridhar, R., & Choueiri, E. Y. (2015). Capturing the elevation dependence of interaural time difference with an extension of the spherical-head model. Paper presented at 139th Audio Engineering Society International Convention, AES 2015, New York, United States.