Variability in experimental measurement techniques of the HRTF is a concern that numerical calculation methods can hope to avoid. Numerical techniques such as the Boundary Element Method (BEM) allow for the calculation of the HRTF over the full audio spectrum from a geometrical model. While numerical calculations are not prone to the same errors as physical measurements, other problems appear which cause variations: geometry acquisition and modeling of real shapes as meshes can be performed in different ways. An on-going international round-robin study, “Club Fritz”, gathers already many HRTF data measured at from different laboratories on a unique dummy head. This work presents preliminary results of numerical simulations based on an acquired geometrical model of this artificial head.
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