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Decomposition of the HRTF from a sphere with neck and hair

Treeby, BE; Paurobally, RM; Pan, J; (2007) Decomposition of the HRTF from a sphere with neck and hair. In: Proceedings of 13th International Conference on Auditory Display, 2007. (pp. pp. 79-84). ICAD: Montréal, Canada. Green open access

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Abstract

Sphere scattering models are commonly used with binaural synthesis as they provide a convenient approximation of the acoustic characteristics of the human head. However these models suffer from being an over simplification of human geometry, and if used in isolation provide ambiguous source location cues. Such models also over exemplify the lobe of increased pressure (bright spot) that occurs at the rear of the sphere due to symmetrically diffracted waves arriving in phase. This paper uses decomposition to examine how the addition of a cylindrical neck and hemispherical hair covering alters the azimuthal head-related transfer function (HRTF) from a rigid sphere (up to 5 kHz). Neither anthropometric feature provides a major perturbation of the sphere HRTF. The neck produces a reduction in the bright spot magnitude in the order of 2-4 dB. The hair produces asymmetrical changes to the HRTF for ipsilateral angles in the order of 1-2 dB. Additional asymmetric reductions in the order of 2-4 dB are seen for contralateral angles when the source is near the interaural axis.

Type: Proceedings paper
Title: Decomposition of the HRTF from a sphere with neck and hair
Event: The 13th International Conference on Auditory Display, 2007
Location: Montréal, Canada
Dates: June 26-29, 2007
Open access status: An open access version is available from UCL Discovery
Publisher version: http://hdl.handle.net/1853/49993
Language: English
Additional information: This paper is licensed under the Creative Commons Attribution - Non Commercial International License (currently, creativecommons.org/licenses/by-nc/4.0).
Keywords: HRTF, decomposition, human hair, neck
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10061771
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