A database of near-field head-related transfer functions based on measurements with a laser spark source

dc.contributorAalto Universityen
dc.contributor.authorMarschall, Marton
dc.contributor.authorGomez Bolanos, Javier
dc.contributor.authorPrepelita, Sebastian
dc.contributor.authorPulkki, Ville
dc.contributor.departmentCommunication Acoustics: Spatial Sound and Psychoacoustics
dc.contributor.departmentDepartment of Information and Communications Engineering
dc.description.abstractThis paper presents a database of near-field head-related transfer functions (HRTFs) of an artificial head, measured at four distances (0.2, 0.3, 0.4 and 0.5 m), with 49 positions recorded at each distance, for a total of 196 measurement points. The HRTFs were recorded using an acoustic pulse created by a laser-induced breakdown of air (LIB), which realizes a close to ideal, massless, monopole sound source. While the LIB produces a high amplitude pressure pulse, the amplitude decays toward low frequencies, which introduced a low frequency limit of about 200 Hz for this particular setup. Thus, a spherical head model based on the analytical expression for scattering by a rigid sphere was fitted to the measured data, and used to extend the low frequency range of the measurements. A brief evaluation of the processed dataset was undertaken, considering interaural time and level differences. The measured and processed database, as well as the low frequency extension procedure are made publicly available to support future research into nearby sound localization, and virtual/augmented reality applications.en
dc.description.versionPeer revieweden
dc.identifier.citationMarschall , M , Gomez Bolanos , J , Prepelita , S & Pulkki , V 2023 , ' A database of near-field head-related transfer functions based on measurements with a laser spark source ' , Applied Acoustics , vol. 203 , 109173 . https://doi.org/10.1016/j.apacoust.2022.109173en
dc.identifier.otherPURE UUID: 236a244b-be3b-45c4-82f9-6e4d10d64f64
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/236a244b-be3b-45c4-82f9-6e4d10d64f64
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/97754141/1_s2.0_S0003682X22005473_main.pdf
dc.publisherElsevier Ltd
dc.relation.ispartofseriesApplied Acousticsen
dc.relation.ispartofseriesVolume 203en
dc.titleA database of near-field head-related transfer functions based on measurements with a laser spark sourceen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi