Journal
APPLIED ACOUSTICS
Volume 68, Issue 8, Pages 835-850Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apacoust.2006.07.016
Keywords
head-related transfer function; spectral cue; sound localization; spectral peak; spectral notch; the median plane
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To examine a simulation method for vertical sound localization, and to clarify which peaks and notches in head-related transfer functions (HRTFs) play a role as spectral cues, localization tests in the median plane were carried out using a parametric HRTF model, which is recomposed only of extracted spectral peaks and notches. The results show that the parametric HRTF recomposed using the first and second notches (N1 and N2) and the first peak (PI) provides almost the same localization accuracy as the measured HRTFs. Observations of the spectral peaks and notches indicate that N1 and N2 change remarkably as the source elevation changes, whereas P1 doesnot depend on the source elevation. In conclusion, N1 and N2 can be regarded as spectral cues, and the hearing system could utilize PI as the reference information to analyze NI and N2. (c) 2006 Elsevier Ltd. All rights reserved.
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