Head Related Transfer-Function (HRTF) describes the influence of torso, head and pinna on sound spectrum. The changes of sound spectrum at listener ear are one of the major cues for sound source localization. It is possible to recognize HRTF using numerical method, e.g. Boundary Elements Method (BEM). The numerical model used for calculation of HRTF is constructed by transfer geometrical shape of head and pinna into numerical domain. Important question during geometry reconstruction process is the accuracy of shape mapping. In the paper, the influence of accuracy of the pinna flare angle mapping is presented. Research have been done on numerical model with the invariable pinna and head shapes, using BEM method.
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