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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2020

Un teskad bras a stummoù skouarn hag a gevreizhennoù treuzdoug e diazalc'h ar skouarn ganet dre un tennañ dargouezhek eus ar skouarnioù

A wide dataset of ear shapes and pinna-telated transfer functions generated by random ear drawings

Un grand jeu de données de formes d'oreilles et de fonctions de transfert relatives à l'oreille, généré grâce à des tirages aléatoires de formes d'oreille

Résumé

Head-related transfer function individualization is a key matter in binaural synthesis. However, currently available databases are limited in size compared to the high dimensionality of the data. In this paper, the process of generating a synthetic dataset of 1000 ear shapes and matching sets of pinna-related transfer functions (PRTFs), named WiDESPREaD (wide dataset of ear shapes and pinna-related transfer functions obtained by random ear drawings), is presented and made freely available to other researchers. Contributions in this article are threefold. First, from a proprietary dataset of 119 three-dimensional left-ear scans, a matching dataset of PRTFs was built by performing fast-multipole boundary element method (FM-BEM) calculations. Second, the underlying geometry of each type of high-dimensional data was investigated using principal component analysis. It was found that this linear machine-learning technique performs better at modeling and reducing data dimensionality on ear shapes than on matching PRTF sets. Third, based on these findings, a method was devised to generate an arbitrarily large synthetic database of PRTF sets that relies on the random drawing of ear shapes and subsequent FM-BEM computations.
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Dates et versions

hal-02506173 , version 1 (12-03-2020)
hal-02506173 , version 2 (06-10-2020)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Corentin Guezenoc, Renaud Seguier. A wide dataset of ear shapes and pinna-telated transfer functions generated by random ear drawings. Journal of the Acoustical Society of America, 2020, 147 (6), pp.4087-4096. ⟨10.1121/10.0001461⟩. ⟨hal-02506173v2⟩
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