The effect of elevation on ITD symmetry

Andrea F. Genovese, Jordan Juras, Chris Miller, Agnieszka Roginska

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In binaural simulations, Head-Related Impulse Responses are used to recreate a 3D auditory display through headphones. Public repositories of individually measured HRIRs are widely used in industry and research. However, head-related anthropometric asymmetries, among measured subjects, are a likely cause of measured asymmetries in Interaural Time Delay cues (ITDs), which may lead to imprecise sound localization. As part of a larger study on HRIR personalization, this paper expands, to the elevation dimension, the investigation of ITD asymmetry in public databases of measured HRIRs. In a previous exploratory study, concerning the horizontal plane only, a region of sensitivity, where the ITD asymmetry was observed to be significantly more prominent, was identified in datasets of individually measured HRIRs approximately between the azimuth range of θ = ±90° to ±130°. For this paper. two publicly available databases of individual HRIRs were selected and analyzed in search of an elevation effect on ITD symmetry. Results found that an increase or decrease in elevation angle φ, away from the horizontal plane, affects the asymmetry curve by reducing the gap between average and peak ITD asymmetry values within the mentioned region in a roughly linear trend. This finding points to the fact that, within the examined datasets, the statistical presence of ITD asymmetries is gradually less severe, although still present, as the elevation angle moves away from the horizontal plane.

Original languageEnglish (US)
Title of host publicationProceedings of the 2016 AES International Conference
Subtitle of host publicationHeadphone Technology
PublisherAudio Engineering Society
Volume2016-August
ISBN (Electronic)9781942220091
StatePublished - 2016
Event2016 AES International Conference on Headphone Technology - Aalborg, Denmark
Duration: Aug 24 2016Aug 26 2016

Other

Other2016 AES International Conference on Headphone Technology
CountryDenmark
CityAalborg
Period8/24/168/26/16

Fingerprint

asymmetry
Headphones
symmetry
Impulse response
Time delay
Display devices
elevation angle
Acoustic waves
Industry
sound localization
cues
azimuth
impulses
time lag
industries
trends
causes
sensitivity
curves
simulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

Cite this

Genovese, A. F., Juras, J., Miller, C., & Roginska, A. (2016). The effect of elevation on ITD symmetry. In Proceedings of the 2016 AES International Conference: Headphone Technology (Vol. 2016-August). Audio Engineering Society.

The effect of elevation on ITD symmetry. / Genovese, Andrea F.; Juras, Jordan; Miller, Chris; Roginska, Agnieszka.

Proceedings of the 2016 AES International Conference: Headphone Technology. Vol. 2016-August Audio Engineering Society, 2016.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Genovese, AF, Juras, J, Miller, C & Roginska, A 2016, The effect of elevation on ITD symmetry. in Proceedings of the 2016 AES International Conference: Headphone Technology. vol. 2016-August, Audio Engineering Society, 2016 AES International Conference on Headphone Technology, Aalborg, Denmark, 8/24/16.
Genovese AF, Juras J, Miller C, Roginska A. The effect of elevation on ITD symmetry. In Proceedings of the 2016 AES International Conference: Headphone Technology. Vol. 2016-August. Audio Engineering Society. 2016
Genovese, Andrea F. ; Juras, Jordan ; Miller, Chris ; Roginska, Agnieszka. / The effect of elevation on ITD symmetry. Proceedings of the 2016 AES International Conference: Headphone Technology. Vol. 2016-August Audio Engineering Society, 2016.
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