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Horizontal-plane HRTFs of KEMAR mannequin spatially interpolated with a resolution of 0.5°

Majdak, Piotr; Stawicki, Marnix; Başkent, Deniz


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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Majdak, Piotr</dc:creator>
  <dc:creator>Stawicki, Marnix</dc:creator>
  <dc:creator>Başkent, Deniz</dc:creator>
  <dc:date>2019-06-19</dc:date>
  <dc:description>HRTFs of the KEMAR manikin (Gardner and Martin, 1995):


	"hrtf_M_normal pinna.sofa": the original HRTF dataset from the KEMAR manikin at a lateral resolution of 5° stored as a SOFA file (Majdak et al., 2013)
	"hrtf_M_normal pinna resolution 0.5 deg.sofa": A super-resolution HRTF set with a directional up-sampling of the original HRTF set to the lateral resolution of 0.5°. To this end, for each ear's HRTF set:
	
		The broadband timing was removed by replacing the HRTF's phase spectrum by the minimum-phase spectrum (Oppenheim et al. 1999) corresponding to HRTF's amplitude spectrum.
		For the interpolation of the amplitude spectra, the complex spectra of the minimum-phase HRTFs for two adjacent available directions were averaged according to a weighting that corresponded to the interpolated target direction. 
		For the interpolation of the timing, a continuous-direction model of the time-of-arrival (TOA) was applied (Ziegelwanger &amp; Majdak, 2014). TOA is the broadband delay arising from the propagation paths from the sound source to the listener's ear. For a given direction of a sound, the interaural difference of TOAs corresponds to the ITD. The TOA model parameters describe listener's geometry (head and ears) and configure a continuous-direction function of broadband TOA. We used this function to calculate TOAs for directions in steps of 0.5°. To this end, for each ear, the model was fit to an HRTF set as described by Majdak &amp; Ziegelwanger (2013) using the implementation from the Auditory Modeling Toolbox (Søndergaard &amp; Majdak, 2013). Then, each minimum-phase HRTF was temporally up-sampled by a factor of 64, circularly shifted by the TOA obtained from the continuous-direction TOA model for the target direction, and then down-sampled to the sampling rate of 44.1 kHz. Note that the temporal oversampling was required to achieve an interaural resolution of 0.35 µs. 
	
	


 </dc:description>
  <dc:identifier>https://zenodo.org/record/3250072</dc:identifier>
  <dc:identifier>10.5281/zenodo.3250072</dc:identifier>
  <dc:identifier>oai:zenodo.org:3250072</dc:identifier>
  <dc:relation>doi:10.5281/zenodo.3250071</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode</dc:rights>
  <dc:subject>hrtfs, virtual acoustics, spatial superresolution</dc:subject>
  <dc:title>Horizontal-plane HRTFs of KEMAR mannequin spatially interpolated with a resolution of 0.5°</dc:title>
  <dc:type>info:eu-repo/semantics/other</dc:type>
  <dc:type>dataset</dc:type>
</oai_dc:dc>
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