Interpretations on principal components analysis of head-related impulse responses in the median plane

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A principal components analysis of the median-plane head-related impulse responses (HRIRs) in the CIPIC HRTF database reveals that the individual HRIRs can be reconstructed by a linear combination of 12 principal components (PCs) within 5% of error in the least-squares sense. The PCs include the intersubject and interelevation variations in the median-plane HRIRs. Each PC provides sound cues for the front-back discrimination and/or the vertical perception. There exist common systematic elevation dependencies in the weights of lower-numbered PCs which contribute to the pinna/head diffractions, whereas the elevation dependencies in the weights of higher-numbered PCs are different from subject to subject. (C) 2008 Acoustical Society of America.
Publisher
ACOUSTICAL SOC AMER AMER INST PHYSICS
Issue Date
2008-04
Language
English
Article Type
Letter
Keywords

SPATIAL FEATURE-EXTRACTION; MODEL

Citation

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, v.123, no.4, pp.EL65 - EL71

ISSN
0001-4966
DOI
10.1121/1.2884094
URI
http://hdl.handle.net/10203/91767
Appears in Collection
ME-Journal Papers(저널논문)
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