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 Home > Publication > International Journal Papers |
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Title |
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Interpretations on principal components analysis of head-related impulse responses in the median plane |
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Author |
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Sungmok Hwang and Youngjin Park |
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Journal |
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Journal of the Acoustical Society of America, Vol. 123, No. 4, pp. EL65-71 |
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Year of Pub. |
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2008 |
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File |
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Hwang_JASAEL_2008.pdf |
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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.
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