NDLI: Evaluation of three different standard head-related transfer functions using an elevation discrimination task for virtual sources displayed in the median plane

Content Provider	IEEE Xplore Digital Library
Author	Hyun Jo Martens, W.L. Youngjin Park
Copyright Year	2010
Description	Author affiliation: Center for Noise and Vibration Control (NoViC), Department of Mechanical Engineering, KAIST, Daejeon, Korea (Hyun Jo; Youngjin Park) \|\| Faculty of Architecture, Design and Planning, The University of Sydney, NSW, Australia (Martens, W.L.)
Abstract	The performance in controlling elevation effect of virtual sources displayed in the median plane was tested for three different sets of standard head-related transfer functions (HRTFs) using an elevation discrimination task. The three candidate sets compared included a representative subject's customized head-related impulse response (HRIR), mean-HRIR derived from the CIPIC database, and mean-HRIR of individually customized HRIRs proposed by Jo et al. [7]. The goal of the current study was to find the best standard HRTF dataset for many listeners, with particular emphasis on its ability to work well without requiring a given listener to engage in any customization procedure. A two interval two alternative forced choice (2-AFC) discrimination for virtual source elevation was used to find how easy it was for subjects to distinguish between elevation angles within 15 or 30 degrees of each other. The simple question asked of each subject was “Which sound source is perceived as higher between the two presented.” To compare the performance of elevation discrimination, individually measured HRTF, individually customized HRTF, and HRTF of KEMAR dummy were also used. The results from six subjects showed that even though the listeners' own measured HRTFs were used, they could not discriminate elevation well for sources differing only in terms of polar angle in the median plane. Similar poor performance was observed when using HRIRs from KEMAR. With regard to the search for standard filters for general use across listeners, a representative subject's customized HRTF, which was based on the method provided by Hwang, et al. [8] was preferred as it supported the best discrimination performance between the tested candidate HRTF datasets.
Starting Page	2055
Ending Page	2060
File Size	835969
Page Count	6
File Format	PDF
ISBN	9781424474530
e-ISBN	9788993215021
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-27
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	IEEE International Conference on Control & Automation
Subject Keyword	Headphones Head-Related Transfer Function (HRTF) Databases HRTF customization Noise Transfer functions Humans Finite impulse response filter Reflection two interval two alternative forced choice (2-AFC)
Content Type	Text
Resource Type	Article

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