Dataset Open Access
Majdak, Piotr; Stawicki, Marnix; Başkent, Deniz
<?xml version='1.0' encoding='utf-8'?> <resource xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://datacite.org/schema/kernel-4" xsi:schemaLocation="http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4.1/metadata.xsd"> <identifier identifierType="DOI">10.5281/zenodo.3250072</identifier> <creators> <creator> <creatorName>Majdak, Piotr</creatorName> <givenName>Piotr</givenName> <familyName>Majdak</familyName> <affiliation>Acoustics Research Institute, Austrian Academy of Sciences</affiliation> </creator> <creator> <creatorName>Stawicki, Marnix</creatorName> <givenName>Marnix</givenName> <familyName>Stawicki</familyName> <affiliation>University of Groningen</affiliation> </creator> <creator> <creatorName>Başkent, Deniz</creatorName> <givenName>Deniz</givenName> <familyName>Başkent</familyName> <affiliation>University of Groningen</affiliation> </creator> </creators> <titles> <title>Horizontal-plane HRTFs of KEMAR mannequin spatially interpolated with a resolution of 0.5°</title> </titles> <publisher>Zenodo</publisher> <publicationYear>2019</publicationYear> <subjects> <subject>hrtfs, virtual acoustics, spatial superresolution</subject> </subjects> <dates> <date dateType="Issued">2019-06-19</date> </dates> <resourceType resourceTypeGeneral="Dataset"/> <alternateIdentifiers> <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/3250072</alternateIdentifier> </alternateIdentifiers> <relatedIdentifiers> <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.5281/zenodo.3250071</relatedIdentifier> </relatedIdentifiers> <version>1.0.0</version> <rightsList> <rights rightsURI="https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode">Creative Commons Attribution Non Commercial Share Alike 4.0 International</rights> <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights> </rightsList> <descriptions> <description descriptionType="Abstract"><p>HRTFs of the KEMAR manikin (Gardner and Martin, 1995):</p> <ul> <li>&quot;hrtf_M_normal pinna.sofa&quot;: the original HRTF dataset&nbsp;from the KEMAR manikin at a lateral resolution of 5&deg; stored as a SOFA file (Majdak et al., 2013)</li> <li>&quot;hrtf_M_normal pinna resolution 0.5 deg.sofa&quot;:&nbsp;A super-resolution HRTF set with a directional&nbsp;up-sampling of the original HRTF set to the lateral resolution of 0.5&deg;. To this end, for each ear&#39;s HRTF set: <ul> <li>The broadband timing was removed by replacing the HRTF&#39;s phase spectrum by the minimum-phase spectrum (Oppenheim et al. 1999) corresponding to HRTF&#39;s amplitude spectrum.</li> <li>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.&nbsp;</li> <li>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&#39;s ear. For a given direction of a sound, the interaural difference of TOAs corresponds to the ITD. The TOA model parameters describe listener&#39;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&deg;. 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 (S&oslash;ndergaard &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 &micro;s.&nbsp;</li> </ul> </li> </ul> <p>&nbsp;</p></description> </descriptions> </resource>
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